diff --git a/AutoKkutuGui/DatabaseManagement.xaml.cs b/AutoKkutuGui/DatabaseManagement.xaml.cs
index 5c36d20..7e39348 100644
--- a/AutoKkutuGui/DatabaseManagement.xaml.cs
+++ b/AutoKkutuGui/DatabaseManagement.xaml.cs
@@ -12,6 +12,7 @@
 using AutoKkutuLib.Database.Jobs.Node;
 using AutoKkutuLib.Database.Jobs.Word;
 using AutoKkutuLib.Database.Jobs;
+using AutoKkutuLib.Database.Jobs.DbCheck;
 
 namespace AutoKkutuGui;
 
diff --git a/AutoKkutuGui/MainWindow.xaml b/AutoKkutuGui/MainWindow.xaml
index 6929933..f58131c 100644
--- a/AutoKkutuGui/MainWindow.xaml
+++ b/AutoKkutuGui/MainWindow.xaml
@@ -22,6 +22,13 @@
             <Setter Property="HorizontalAlignment" Value="Stretch" />
             <Setter Property="VerticalAlignment" Value="Stretch" />
         </Style>
+        <Style x:Key="BaseCheckboxStyle" TargetType="CheckBox">
+            <Setter Property="Margin" Value="5,5,5,5" />
+            <Setter Property="Padding" Value="10,0,10,0" />
+            <Setter Property="Foreground" Value="#FFFFFF" />
+            <Setter Property="HorizontalAlignment" Value="Stretch" />
+            <Setter Property="VerticalAlignment" Value="Stretch" />
+        </Style>
         <Style x:Key="BaseSearchBox" TargetType="TextBox">
             <Setter Property="VerticalAlignment" Value="Center" />
             <Setter Property="Background" Value="#333337" />
@@ -141,7 +148,8 @@
                                 <ColumnDefinition Width="*" />
                                 <ColumnDefinition Width="Auto" />
                             </Grid.ColumnDefinitions>
-                            <Label Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="2" Margin="10,10,0,0" VerticalAlignment="Bottom" Content="수동 검색" FontFamily="/AutoKkutu;component/Resources/Font/#NanumBarunGothic" FontSize="20" Foreground="#FFFFFFFF" />
+                            <Label Grid.Row="0" Grid.Column="0" Margin="10,10,0,0" VerticalAlignment="Bottom" Content="수동 검색" FontFamily="/AutoKkutu;component/Resources/Font/#NanumBarunGothic" FontSize="20" Foreground="#FFFFFFFF" />
+                            <CheckBox Name="RegexpSearch" Grid.Row="0" Grid.Column="1" HorizontalAlignment="Right" VerticalAlignment="Bottom" Content="정규표현식" Style="{StaticResource BaseCheckboxStyle}" />
                             <Button Name="SubmitSearch" Grid.Row="1" Grid.Column="1" MinHeight="25" Margin="2,5,15,5" Click="SubmitSearch_Click" Content="검색" FontSize="14" Style="{StaticResource BaseButtonStyle}" />
                             <TextBox x:Name="SearchField" Grid.Row="1" Grid.Column="0" Margin="15,0,2,0" KeyDown="SearchField_KeyDown" Style="{StaticResource BaseSearchBox}" />
                             <TextBlock Grid.Row="1" Grid.Column="0" Margin="15,0,15,0" Text="검색할 키워드를 입력해주세요">
diff --git a/AutoKkutuGui/MainWindow.xaml.cs b/AutoKkutuGui/MainWindow.xaml.cs
index e89922a..96074c0 100644
--- a/AutoKkutuGui/MainWindow.xaml.cs
+++ b/AutoKkutuGui/MainWindow.xaml.cs
@@ -446,11 +446,13 @@ private void SubmitSearch_Click(object? sender, RoutedEventArgs e)
 				missionChar = mainInstance.AutoKkutu.Game.Session.WordCondition.MissionChar;
 
 			mainInstance.AutoKkutu.PathFinder.FindPath(gameMode, new PathDetails(
-				InitialLaw.ApplyInitialLaw(new WordCondition(SearchField.Text, missionChar: missionChar ?? "")),
+				InitialLaw.ApplyInitialLaw(new WordCondition(SearchField.Text, missionChar: missionChar ?? "", regexp: RegexpSearch.IsChecked ?? false)),
 				mainInstance.SetupPathFinderFlags(PathFlags.DoNotAutoEnter | PathFlags.DoNotCheckExpired),
 				mainInstance.Preference.ReturnModeEnabled,
 				mainInstance.Preference.MaxDisplayedWordCount), mainInstance.Preference.ActiveWordPreference);
-			SearchField.Text = "";
+
+			if (!(RegexpSearch.IsChecked ?? false)) // 힘들게 적은 정규표현식을 지워버리는 것 만큼 빡치는 일도 없음
+				SearchField.Text = "";
 		}
 	}
 }
diff --git a/AutoKkutuLib/Database/Jobs/DbCheck/DbCheckJob.cs b/AutoKkutuLib/Database/Jobs/DbCheck/DbCheckJob.cs
index 4e2dad9..a9bd58d 100644
--- a/AutoKkutuLib/Database/Jobs/DbCheck/DbCheckJob.cs
+++ b/AutoKkutuLib/Database/Jobs/DbCheck/DbCheckJob.cs
@@ -32,8 +32,9 @@ public void CheckDB(bool UseOnlineDB, BrowserBase? browser)
 			{
 				new DeduplicateWordTableJob(Db),
 				new RefreshNodeListJob(nodeManager),
-				new WordTableCheck(nodeManager),
 				new InvalidEndNodeCheck(Db),
+				new RefreshNodeListJob(nodeManager),
+				new WordTableCheck(nodeManager),
 				new RunVacuumJob(Db)
 			};
 			try
diff --git a/AutoKkutuLib/Database/Jobs/DbCheck/DeduplicateWordTableJob.cs b/AutoKkutuLib/Database/Jobs/DbCheck/DeduplicateWordTableJob.cs
index 7d65e04..d1195da 100644
--- a/AutoKkutuLib/Database/Jobs/DbCheck/DeduplicateWordTableJob.cs
+++ b/AutoKkutuLib/Database/Jobs/DbCheck/DeduplicateWordTableJob.cs
@@ -12,7 +12,7 @@ protected override int RunCore()
 		try
 		{
 			removed = Db.Query.Deduplicate().Execute();
-			LibLogger.Info(CheckName, "Removed {0} duplicate word entries.", removed);
+			LibLogger.Debug(CheckName, "Removed {0} duplicate word entries.", removed);
 		}
 		catch (Exception ex)
 		{
diff --git a/AutoKkutuLib/Database/Jobs/DbCheck/InvalidEndNodeCheck.cs b/AutoKkutuLib/Database/Jobs/DbCheck/InvalidEndNodeCheck.cs
index b96be3d..0f9eb48 100644
--- a/AutoKkutuLib/Database/Jobs/DbCheck/InvalidEndNodeCheck.cs
+++ b/AutoKkutuLib/Database/Jobs/DbCheck/InvalidEndNodeCheck.cs
@@ -12,22 +12,22 @@ public InvalidEndNodeCheck(DbConnectionBase db) : base(db, "Remove Invalid End N
 	{
 	}
 
-	private int RemoveInvalidEndNode(string wordListColumnName, NodeTypes nodeType, string additionalCondition = "")
+	private int RemoveInvalidEndNode(NodeTypes nodeType, string additionalCondition = "", bool reverse = false)
 	{
 		// Issue #82
 		var deljob = new NodeDeletionJob(Db, nodeType);
 		var invalidList = new List<string>();
-		foreach (var endnode in Db.Query<string>($"SELECT ({DatabaseConstants.WordIndexColumnName}) FROM {nodeType.ToNodeTableName()} ORDER BY({DatabaseConstants.WordIndexColumnName}) DESC"))
+		var tableName = nodeType.ToNodeTableName();
+		foreach (var endnode in Db.Query<string>($"SELECT ({DatabaseConstants.WordIndexColumnName}) FROM {tableName} ORDER BY({DatabaseConstants.WordIndexColumnName}) DESC"))
 		{
-			var builder = new StringBuilder($"SELECT COUNT(*) FROM {DatabaseConstants.WordTableName} WHERE {wordListColumnName} = @Node");
+			var builder = new StringBuilder($"SELECT COUNT(*) FROM {DatabaseConstants.WordTableName} WHERE {DatabaseConstants.WordColumnName} LIKE @Pattern");
 			if (!string.IsNullOrEmpty(additionalCondition))
 				builder.Append(" AND ").Append(additionalCondition);
 			builder.Append(';');
-
-			var count = Db.ExecuteScalar<int>(builder.ToString(), new { Node = endnode });
+			var count = Db.ExecuteScalar<int>(builder.ToString(), new { Pattern = reverse ? ('%' + endnode) : (endnode + '%') });
 			if (count > 0)
 			{
-				LibLogger.Info<DbCheckJob>("End node {0} is invalid because {1} suitable words are found from the database.", endnode, count);
+				LibLogger.Debug(CheckName, "Table {0} end node index {1} is invalid because {2} suitable word(s) are found from the database.", tableName, endnode, count);
 				invalidList.Add(endnode);
 			}
 		}
@@ -39,10 +39,12 @@ private int RemoveInvalidEndNode(string wordListColumnName, NodeTypes nodeType,
 
 	protected override int RunCore()
 	{
-		removedEnd = RemoveInvalidEndNode(DatabaseConstants.WordIndexColumnName, NodeTypes.EndWord);
-		removedReverseEnd = RemoveInvalidEndNode(DatabaseConstants.ReverseWordIndexColumnName, NodeTypes.ReverseEndWord);
-		removedKkutuEnd = RemoveInvalidEndNode(DatabaseConstants.KkutuWordIndexColumnName, NodeTypes.KkutuEndWord, $"LENGTH({DatabaseConstants.KkutuWordIndexColumnName}) > 3");
-		removedKKTEnd = RemoveInvalidEndNode(DatabaseConstants.WordIndexColumnName, NodeTypes.KKTEndWord, $"(LENGTH({DatabaseConstants.WordIndexColumnName}) = 2 OR LENGTH({DatabaseConstants.WordIndexColumnName}) = 3)"); // TODO: Replace with 'flags' column read and bitmask 'KKT3' verification
+		using var transaction = Db.BeginTransaction();
+		removedEnd = RemoveInvalidEndNode(NodeTypes.EndWord);
+		removedReverseEnd = RemoveInvalidEndNode(NodeTypes.ReverseEndWord, reverse: true);
+		removedKkutuEnd = RemoveInvalidEndNode(NodeTypes.KkutuEndWord, $"LENGTH({DatabaseConstants.KkutuWordIndexColumnName}) > 3");
+		removedKKTEnd = RemoveInvalidEndNode(NodeTypes.KKTEndWord, $"(LENGTH({DatabaseConstants.WordIndexColumnName}) = 2 OR LENGTH({DatabaseConstants.WordIndexColumnName}) = 3)"); // TODO: Replace with 'flags' column read and bitmask 'KKT3' verification
+		transaction.Commit();
 		return removedEnd + removedReverseEnd + removedKkutuEnd + removedKKTEnd;
 	}
 
diff --git a/AutoKkutuLib/Database/Jobs/DbCheck/RefreshNodeListJob.cs b/AutoKkutuLib/Database/Jobs/DbCheck/RefreshNodeListJob.cs
index ec20bff..65266aa 100644
--- a/AutoKkutuLib/Database/Jobs/DbCheck/RefreshNodeListJob.cs
+++ b/AutoKkutuLib/Database/Jobs/DbCheck/RefreshNodeListJob.cs
@@ -8,14 +8,7 @@ internal class RefreshNodeListJob : DbCheckSubtaskBase
 
 	protected override int RunCore()
 	{
-		try
-		{
-			nodeManager.LoadNodeLists(Db);
-		}
-		catch (Exception ex)
-		{
-			LibLogger.Error<DbCheckJob>(ex, "Failed to refresh node lists");
-		}
+		nodeManager.LoadNodeLists(Db);
 		return 0;
 	}
 
diff --git a/AutoKkutuLib/Database/Jobs/DbCheck/RunVacuumJob.cs b/AutoKkutuLib/Database/Jobs/DbCheck/RunVacuumJob.cs
index 43fc18c..49c5e9e 100644
--- a/AutoKkutuLib/Database/Jobs/DbCheck/RunVacuumJob.cs
+++ b/AutoKkutuLib/Database/Jobs/DbCheck/RunVacuumJob.cs
@@ -5,7 +5,11 @@ public RunVacuumJob(DbConnectionBase db) : base(db, "Run Vacuum")
 	{
 	}
 
-	protected override int RunCore() => Db.Query.Vacuum().Execute();
+	protected override int RunCore()
+	{
+		Db.Query.Vacuum().Execute();
+		return 0;
+	}
 
 	public override void BriefResult() { }
 }
diff --git a/AutoKkutuLib/Database/Jobs/DbCheck/WordTableChecks/InvalidWordSubcheck.cs b/AutoKkutuLib/Database/Jobs/DbCheck/WordTableChecks/InvalidWordSubcheck.cs
index 77ee821..81358af 100644
--- a/AutoKkutuLib/Database/Jobs/DbCheck/WordTableChecks/InvalidWordSubcheck.cs
+++ b/AutoKkutuLib/Database/Jobs/DbCheck/WordTableChecks/InvalidWordSubcheck.cs
@@ -41,7 +41,7 @@ public bool Verify(WordModel entry)
 
 	public int Fix(DbConnectionBase db)
 	{
-		var job = new BatchWordDeletionJob(db);
+		var job = new BatchWordDeletionJob(db, false);
 		return job.Execute(invalidList).TotalCount;
 	}
 }
diff --git a/AutoKkutuLib/Database/Jobs/DbCheck/WordTableChecks/OnlineSubcheck.cs b/AutoKkutuLib/Database/Jobs/DbCheck/WordTableChecks/OnlineSubcheck.cs
index 3e18f23..3775c78 100644
--- a/AutoKkutuLib/Database/Jobs/DbCheck/WordTableChecks/OnlineSubcheck.cs
+++ b/AutoKkutuLib/Database/Jobs/DbCheck/WordTableChecks/OnlineSubcheck.cs
@@ -24,7 +24,7 @@ public bool Verify(WordModel entry)
 
 	public int Fix(DbConnectionBase db)
 	{
-		var job = new BatchWordDeletionJob(db);
+		var job = new BatchWordDeletionJob(db, false);
 		return job.Execute(inexistentList).TotalCount;
 	}
 }
diff --git a/AutoKkutuLib/Database/Jobs/DbCheck/WordTableChecks/WordTableCheck.cs b/AutoKkutuLib/Database/Jobs/DbCheck/WordTableChecks/WordTableCheck.cs
index 30c76ed..45a86d9 100644
--- a/AutoKkutuLib/Database/Jobs/DbCheck/WordTableChecks/WordTableCheck.cs
+++ b/AutoKkutuLib/Database/Jobs/DbCheck/WordTableChecks/WordTableCheck.cs
@@ -42,7 +42,7 @@ protected override int RunCore()
 			count += innerCount;
 		}
 		transaction.Commit();
-		return 0;
+		return count;
 	}
 
 	public override void BriefResult()
diff --git a/AutoKkutuLib/Database/Jobs/Word/BatchWordAdditionJob.cs b/AutoKkutuLib/Database/Jobs/Word/BatchWordAdditionJob.cs
index d37edb9..5feeab7 100644
--- a/AutoKkutuLib/Database/Jobs/Word/BatchWordAdditionJob.cs
+++ b/AutoKkutuLib/Database/Jobs/Word/BatchWordAdditionJob.cs
@@ -1,6 +1,7 @@
 using AutoKkutuLib.Browser;
 using AutoKkutuLib.Database.Path;
 using AutoKkutuLib.Database.Sql.Query;
+using System.Data;
 
 namespace AutoKkutuLib.Database.Jobs.Word;
 public sealed class BatchWordAdditionJob : BatchWordJob
@@ -9,13 +10,15 @@ public sealed class BatchWordAdditionJob : BatchWordJob
 	private readonly BrowserBase? browser;
 	private readonly WordFlags wordFlags;
 	private readonly bool verifyOnline;
+	private readonly bool transactioned;
 
-	public BatchWordAdditionJob(NodeManager nodeManager, BrowserBase? browser, WordFlags wordFlags, bool verifyOnline) : base(nodeManager.DbConnection)
+	public BatchWordAdditionJob(NodeManager nodeManager, BrowserBase? browser, WordFlags wordFlags, bool verifyOnline, bool transactioned = true) : base(nodeManager.DbConnection)
 	{
 		this.nodeManager = nodeManager;
 		this.browser = browser;
 		this.wordFlags = wordFlags;
 		this.verifyOnline = verifyOnline;
+		this.transactioned = transactioned;
 	}
 
 	public override WordCount Execute(IEnumerable<string> wordList)
@@ -24,9 +27,11 @@ public override WordCount Execute(IEnumerable<string> wordList)
 			throw new ArgumentNullException(nameof(wordList));
 
 		var count = new WordCount();
+		IDbTransaction? transaction = null;
 		try
 		{
-			using var transaction = DbConnection.BeginTransaction(); // This will increase addition speed, especially on SQLite
+			if (transactioned)
+				transaction = DbConnection.BeginTransaction(); // This will increase addition speed, especially on SQLite
 			var query = DbConnection.Query.AddWord();
 			foreach (var word in wordList)
 			{
@@ -45,12 +50,16 @@ public override WordCount Execute(IEnumerable<string> wordList)
 					AddSingleWord(query, word, wordFlags, ref count);
 			}
 
-			transaction.Commit();
+			transaction?.Commit();
 		}
 		catch (Exception ex)
 		{
 			LibLogger.Error<BatchWordAdditionJob>(ex, "Failed to perform batch word addition.");
 		}
+		finally
+		{
+			transaction?.Dispose();
+		}
 		return count;
 	}
 
diff --git a/AutoKkutuLib/Database/Jobs/Word/BatchWordDeletionJob.cs b/AutoKkutuLib/Database/Jobs/Word/BatchWordDeletionJob.cs
index 16ed910..44f092b 100644
--- a/AutoKkutuLib/Database/Jobs/Word/BatchWordDeletionJob.cs
+++ b/AutoKkutuLib/Database/Jobs/Word/BatchWordDeletionJob.cs
@@ -1,11 +1,12 @@
 using AutoKkutuLib.Database.Sql.Query;
+using System.Data;
 
 namespace AutoKkutuLib.Database.Jobs.Word;
 public sealed class BatchWordDeletionJob : BatchWordJob
 {
-	public BatchWordDeletionJob(DbConnectionBase dbConnection) : base(dbConnection)
-	{
-	}
+	private readonly bool transactioned;
+
+	public BatchWordDeletionJob(DbConnectionBase dbConnection, bool transactioned = true) : base(dbConnection) => this.transactioned = transactioned;
 
 	public override WordCount Execute(IEnumerable<string> wordList)
 	{
@@ -14,9 +15,11 @@ public override WordCount Execute(IEnumerable<string> wordList)
 
 		var count = new WordCount();
 
+		IDbTransaction? transaction = null;
 		try
 		{
-			var transaction = DbConnection.BeginTransaction();
+			if (transactioned)
+				transaction = DbConnection.BeginTransaction();
 			var query = DbConnection.Query.DeleteWord();
 			foreach (var word in wordList)
 			{
@@ -24,11 +27,15 @@ public override WordCount Execute(IEnumerable<string> wordList)
 					count.Increment(WordFlags.None, 1);
 			}
 
-			transaction.Commit();
+			transaction?.Commit();
 		}
 		catch (Exception ex)
 		{
-			LibLogger.Error<BatchWordDeletionJob>(ex, "Failed to commit word addition queries to the database.");
+			LibLogger.Error<BatchWordDeletionJob>(ex, "Failed to commit word deletion queries to the database.");
+		}
+		finally
+		{
+			transaction?.Dispose();
 		}
 
 		return count;
diff --git a/AutoKkutuLib/Database/Sql/Query/FindWordQuery.cs b/AutoKkutuLib/Database/Sql/Query/FindWordQuery.cs
index 6c6afee..7b787fa 100644
--- a/AutoKkutuLib/Database/Sql/Query/FindWordQuery.cs
+++ b/AutoKkutuLib/Database/Sql/Query/FindWordQuery.cs
@@ -152,7 +152,7 @@ private FindQuery CreateQuery(PathDetails parameter)
 				// PostgreSQL: https://www.postgresql.org/docs/current/functions-matching.html
 				// MySQL: https://dev.mysql.com/doc/refman/8.0/en/regexp.html
 				// MariaDB: https://mariadb.com/kb/en/regexp/
-				filter = $" WHERE ({wordIndexColumn} REGEXP @PrimaryWord)";
+				filter = $" WHERE ({DatabaseConstants.WordColumnName} REGEXP @PrimaryWord)";
 			}
 			else
 			{
diff --git a/AutoKkutuLib/Database/Sql/Query/VacuumQuery.cs b/AutoKkutuLib/Database/Sql/Query/VacuumQuery.cs
index bca5e7a..3c0f9e2 100644
--- a/AutoKkutuLib/Database/Sql/Query/VacuumQuery.cs
+++ b/AutoKkutuLib/Database/Sql/Query/VacuumQuery.cs
@@ -1,4 +1,5 @@
 using Dapper;
+using System.Data;
 
 namespace AutoKkutuLib.Database.Sql.Query;
 public class VacuumQuery : SqlQuery<int>
@@ -10,6 +11,6 @@ public VacuumQuery(DbConnectionBase connection) : base(connection)
 	public override int Execute()
 	{
 		LibLogger.Debug<VacuumQuery>("Running vacuum cleaner on database.");
-		return Connection.Execute("VACUUM;");
+		return Connection.Execute("VACUUM;", commandType: CommandType.Text);
 	}
 }
diff --git a/AutoKkutuLib/Game/DomHandlers/BasicDomHandler.cs b/AutoKkutuLib/Game/DomHandlers/BasicDomHandler.cs
index 65fde97..6c4a7f4 100644
--- a/AutoKkutuLib/Game/DomHandlers/BasicDomHandler.cs
+++ b/AutoKkutuLib/Game/DomHandlers/BasicDomHandler.cs
@@ -139,7 +139,7 @@ public virtual async ValueTask RegisterInGameFunctions(ISet<int> alreadyRegister
 		if (!await Browser.EvaluateJavaScriptBoolAsync(Browser.GetScriptTypeName(CommonNameRegistry.FunctionsRegistered)))
 		{
 			var script = mapping.ApplyTo(LibResources.baseDomHandlerJs);
-			LibLogger.Warn<BasicDomHandler>("baseHandler injection result: {result}", await Browser.EvaluateJavaScriptRawAsync(script));
+			LibLogger.Debug<BasicDomHandler>("baseHandler injection result: {result}", await Browser.EvaluateJavaScriptRawAsync(script));
 		}
 	}
 }
diff --git a/AutoKkutuLib/Game/Enterer/NativeInputSimulator.NativeCalls.cs b/AutoKkutuLib/Game/Enterer/NativeInputSimulator.NativeCalls.cs
index b8fda57..cb24c46 100644
--- a/AutoKkutuLib/Game/Enterer/NativeInputSimulator.NativeCalls.cs
+++ b/AutoKkutuLib/Game/Enterer/NativeInputSimulator.NativeCalls.cs
@@ -4,94 +4,14 @@
 namespace AutoKkutuLib.Game.Enterer;
 public partial class NativeInputSimulator
 {
+	protected const char SPECIAL_HANGUL = '∈';
+	protected const char SPECIAL_RIGHT = '∋';
+	protected const char SPECIAL_RSHIFT = '⊆';
+	protected const char SPECIAL_LCTRL = '⊇';
 
-	private static readonly IImmutableDictionary<char, ushort> vkCodeMapping;
-	private static readonly IDictionary<ushort, ushort> scanCodeMapping;
+	protected const uint WM_IME_CONTROL = 643;
 
-	private static readonly IntPtr keyboardLayout;
-
-	private const ushort VK_HANGUL = 0x15;
-	private const ushort VK_RIGHT = 0x27;
-	private const ushort VK_RSHIFT = 0xa1;
-	private const ushort VK_LCTRL = 0xa2;
-
-	private const uint MAPVK_VK_TO_VSC = 0;
-
-	private const uint WM_IME_CONTROL = 643;
-
-	private const uint IMC_GETOPENSTATUS = 0x5;
-
-	static NativeInputSimulator()
-	{
-		// https://learn.microsoft.com/en-us/windows/win32/inputdev/virtual-key-codes
-		var vkBuilder = ImmutableDictionary.CreateBuilder<char, ushort>();
-		vkBuilder.Add('\b', 0x08);
-		vkBuilder.Add('\t', 0x09);
-		vkBuilder.Add('\n', 0x0d);
-		vkBuilder.Add(' ', 0x20);
-		vkBuilder.Add('0', 0x30);
-		vkBuilder.Add('1', 0x31);
-		vkBuilder.Add('2', 0x32);
-		vkBuilder.Add('3', 0x33);
-		vkBuilder.Add('4', 0x34);
-		vkBuilder.Add('5', 0x35);
-		vkBuilder.Add('6', 0x36);
-		vkBuilder.Add('7', 0x37);
-		vkBuilder.Add('8', 0x38);
-		vkBuilder.Add('9', 0x39);
-		vkBuilder.Add('a', 0x41);
-		vkBuilder.Add('b', 0x42);
-		vkBuilder.Add('c', 0x43);
-		vkBuilder.Add('d', 0x44);
-		vkBuilder.Add('e', 0x45);
-		vkBuilder.Add('f', 0x46);
-		vkBuilder.Add('g', 0x47);
-		vkBuilder.Add('h', 0x48);
-		vkBuilder.Add('i', 0x49);
-		vkBuilder.Add('j', 0x4A);
-		vkBuilder.Add('k', 0x4B);
-		vkBuilder.Add('l', 0x4C);
-		vkBuilder.Add('m', 0x4D);
-		vkBuilder.Add('n', 0x4E);
-		vkBuilder.Add('o', 0x4F);
-		vkBuilder.Add('p', 0x50);
-		vkBuilder.Add('q', 0x51);
-		vkBuilder.Add('r', 0x52);
-		vkBuilder.Add('s', 0x53);
-		vkBuilder.Add('t', 0x54);
-		vkBuilder.Add('u', 0x55);
-		vkBuilder.Add('v', 0x56);
-		vkBuilder.Add('w', 0x57);
-		vkBuilder.Add('x', 0x58);
-		vkBuilder.Add('y', 0x59);
-		vkBuilder.Add('z', 0x5A);
-		vkBuilder.Add('*', 0x6a);
-		vkBuilder.Add('+', 0x6b);
-		vkBuilder.Add('-', 0x6d);
-		vkBuilder.Add('.', 0x6e);
-		vkBuilder.Add('/', 0x6f);
-		vkCodeMapping = vkBuilder.ToImmutable();
-
-		keyboardLayout = GetKeyboardLayout(0);
-		var scBuilder = new Dictionary<ushort, ushort>();
-
-		void CacheScanCode(ushort vkCode) => scBuilder.Add(vkCode, MapVirtualKeyEx(vkCode, MAPVK_VK_TO_VSC, keyboardLayout));
-
-		CacheScanCode(VK_RSHIFT);
-		CacheScanCode(VK_HANGUL);
-		CacheScanCode(VK_LCTRL);
-		foreach ((var _, var vkCode) in vkCodeMapping)
-			CacheScanCode(vkCode);
-		scanCodeMapping = scBuilder;
-	}
-
-	private static ushort GetScanCode(ushort vkCode)
-	{
-		if (!scanCodeMapping.ContainsKey(vkCode))
-			scanCodeMapping.Add(vkCode, MapVirtualKeyEx(vkCode, MAPVK_VK_TO_VSC, keyboardLayout));
-
-		return scanCodeMapping[vkCode];
-	}
+	protected const uint IMC_GETOPENSTATUS = 0x5;
 
 	// Native imports
 
@@ -105,12 +25,6 @@ private static ushort GetScanCode(ushort vkCode)
 	[DllImport("imm32.dll")]
 	private static extern IntPtr ImmGetDefaultIMEWnd(IntPtr hWnd);
 
-	[DllImport("user32.dll", CharSet = CharSet.Auto)]
-	private static extern ushort MapVirtualKeyEx([In] int uCode, [In] uint uMapType, IntPtr dwhkl);
-
-	[DllImport("user32.dll")]
-	private static extern IntPtr GetKeyboardLayout([In] uint idThread);
-
 	[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
 	static extern IntPtr SendMessage([In] IntPtr hWnd, [In] uint Msg, [In] IntPtr wParam, [In] IntPtr IParam);
 
diff --git a/AutoKkutuLib/Game/Enterer/NativeInputSimulator.cs b/AutoKkutuLib/Game/Enterer/NativeInputSimulator.cs
index 3c3aead..57a46d1 100644
--- a/AutoKkutuLib/Game/Enterer/NativeInputSimulator.cs
+++ b/AutoKkutuLib/Game/Enterer/NativeInputSimulator.cs
@@ -43,31 +43,16 @@ protected override async ValueTask SimulationStarted()
 
 	protected async override ValueTask AppendAsync(EnterOptions options, InputCommand input)
 	{
-		ushort vkCode;
-		if (input.Type == InputCommandType.ImeCompositionTermination)
-		{
-			vkCode = VK_RIGHT;
-		}
-		else if (vkCodeMapping.TryGetValue(input.Key, out var vk))
-		{
-			vkCode = vk;
-		}
-		else
-		{
-			LibLogger.Warn(EntererName, "VkCode not found for character {char}", input.Key);
-			return;
-		}
-
 		// Shift키
 		if (shiftState && input.ShiftState == ShiftState.Release)
 		{
-			KeyUp(VK_RSHIFT);
+			KeyPress(SPECIAL_RSHIFT);
 			shiftState = false;
 			LibLogger.Debug(EntererName, "Shift released.");
 		}
 		else if (!shiftState && input.ShiftState == ShiftState.Press)
 		{
-			KeyDown(VK_RSHIFT);
+			KeyDown(SPECIAL_RSHIFT);
 			shiftState = true;
 			LibLogger.Debug(EntererName, "Shift pressed.");
 		}
@@ -75,20 +60,19 @@ protected async override ValueTask AppendAsync(EnterOptions options, InputComman
 		// IME 상태 업데이트
 		if (hangulImeState && input.ImeState == ImeState.English)
 		{
-			KeyDown(VK_HANGUL);
-			KeyUp(VK_HANGUL);
+			KeyPress(SPECIAL_HANGUL);
 			hangulImeState = false;
 			LibLogger.Debug(EntererName, "IME state changed to English.");
 		}
 		else if (!hangulImeState && input.ImeState == ImeState.Korean)
 		{
-			KeyDown(VK_HANGUL);
-			KeyUp(VK_HANGUL);
+			KeyPress(SPECIAL_HANGUL);
 			hangulImeState = true;
 			LibLogger.Debug(EntererName, "IME state changed to Korean.");
 		}
 
-		KeyDown(vkCode);
+		var ch = input.Type == InputCommandType.ImeCompositionTermination ? SPECIAL_RIGHT : input.Key;
+		KeyDown(ch);
 		if (options.GetMaxDelayBeforeNextChar() > 0)
 		{
 			SetFocus();
@@ -97,7 +81,7 @@ protected async override ValueTask AppendAsync(EnterOptions options, InputComman
 
 		await Task.Delay(options.GetDelayBeforeKeyUp());
 
-		KeyUp(vkCode);
+		KeyUp(ch);
 		if (options.GetMaxDelayBeforeNextChar() > 0)
 		{
 			SetFocus();
diff --git a/AutoKkutuLib/Game/Enterer/Win32InputSimulator.cs b/AutoKkutuLib/Game/Enterer/Win32InputSimulator.cs
index 3f0af6d..7afcdb9 100644
--- a/AutoKkutuLib/Game/Enterer/Win32InputSimulator.cs
+++ b/AutoKkutuLib/Game/Enterer/Win32InputSimulator.cs
@@ -1,12 +1,13 @@
 using AutoKkutuLib.Hangul;
 using System.Runtime.InteropServices;
+using static AutoKkutuLib.Game.Enterer.NativeInputSimulator;
 
 namespace AutoKkutuLib.Game.Enterer;
-public class Win32InputSimulator : NativeInputSimulator
+public partial class Win32InputSimulator : NativeInputSimulator
 {
 	public const string Name = "Win32InputSimulate";
 
-	private IList<INPUT> inputList = new List<INPUT>();
+	private readonly IList<INPUT> inputList = new List<INPUT>();
 
 	public Win32InputSimulator(IGame game) : base(Name, game)
 	{
@@ -29,57 +30,34 @@ protected override void FlushInputBuffer()
 		}
 	}
 
-	protected override void SubmitInput()
+	private void AddInput(char ch, uint flags)
 	{
-		KeyPress(vkCodeMapping['\n']);
-		FlushInputBuffer();
-	}
-
-	protected override void ClearInput()
-	{
-		// Select all (CTRL+A)
-		KeyDown(VK_LCTRL);
-		KeyPress(vkCodeMapping['a']);
-		KeyUp(VK_LCTRL);
+		if (vkCodeMapping.TryGetValue(ch, out var vkCode))
+		{
+			var input = new INPUT { Type = 1 };
+			input.Data.Keyboard = new KEYBDINPUT
+			{
+				Vk = vkCode,
+				Scan = GetScanCode(vkCode),
+				Flags = flags, // 0 to down, 2 to up
+				Time = 0,
+				ExtraInfo = IntPtr.Zero
+			};
+
+			inputList.Add(input);
+			return;
+		}
 
-		// Delete
-		KeyPress(vkCodeMapping['\b']);
-		FlushInputBuffer();
+		LibLogger.Warn(EntererName, "VkCode not found for character {char}", ch);
 	}
 
-	private void KeyPress(ushort vkCode)
+	protected override void KeyPress(char ch)
 	{
-		KeyDown(vkCode);
-		KeyUp(vkCode);
+		KeyDown(ch);
+		KeyUp(ch);
 	}
 
-	private void KeyDown(ushort vkCode)
-	{
-		var input = new INPUT { Type = 1 };
-		input.Data.Keyboard = new KEYBDINPUT
-		{
-			Vk = vkCode,
-			Scan = GetScanCode(vkCode),
-			Flags = 0,
-			Time = 0,
-			ExtraInfo = IntPtr.Zero
-		};
+	protected override void KeyUp(char ch) => AddInput(ch, 2);
 
-		inputList.Add(input);
-	}
-
-	private void KeyUp(ushort vkCode)
-	{
-		var input = new INPUT { Type = 1 };
-		input.Data.Keyboard = new KEYBDINPUT
-		{
-			Vk = vkCode,
-			Scan = GetScanCode(vkCode),
-			Flags = 2,
-			Time = 0,
-			ExtraInfo = IntPtr.Zero
-		};
-
-		inputList.Add(input);
-	}
+	protected override void KeyDown(char ch) => AddInput(ch, 0);
 }
diff --git a/AutoKkutuLib/Game/Enterer/Win32InputSumulator.NativeCalls.cs b/AutoKkutuLib/Game/Enterer/Win32InputSumulator.NativeCalls.cs
index 12d754b..6034676 100644
--- a/AutoKkutuLib/Game/Enterer/Win32InputSumulator.NativeCalls.cs
+++ b/AutoKkutuLib/Game/Enterer/Win32InputSumulator.NativeCalls.cs
@@ -1,8 +1,93 @@
-using System.Runtime.InteropServices;
+using System.Collections.Immutable;
+using System.Runtime.InteropServices;
 
 namespace AutoKkutuLib.Game.Enterer;
 public partial class Win32InputSimulator
 {
+	private static readonly IImmutableDictionary<char, ushort> vkCodeMapping;
+	private static readonly IDictionary<ushort, ushort> scanCodeMapping;
+
+	private static readonly IntPtr keyboardLayout;
+
+	private const uint MAPVK_VK_TO_VSC = 0;
+
+	static Win32InputSimulator()
+	{
+		// https://learn.microsoft.com/en-us/windows/win32/inputdev/virtual-key-codes
+		var vkBuilder = ImmutableDictionary.CreateBuilder<char, ushort>();
+		vkBuilder.Add('\b', 0x08);
+		vkBuilder.Add('\t', 0x09);
+		vkBuilder.Add('\n', 0x0d);
+		vkBuilder.Add(SPECIAL_HANGUL, 0x15); // VK_HANGUL
+		vkBuilder.Add(' ', 0x20);
+		vkBuilder.Add(SPECIAL_RIGHT, 0x27); // VK_RIGHT
+		vkBuilder.Add('0', 0x30);
+		vkBuilder.Add('1', 0x31);
+		vkBuilder.Add('2', 0x32);
+		vkBuilder.Add('3', 0x33);
+		vkBuilder.Add('4', 0x34);
+		vkBuilder.Add('5', 0x35);
+		vkBuilder.Add('6', 0x36);
+		vkBuilder.Add('7', 0x37);
+		vkBuilder.Add('8', 0x38);
+		vkBuilder.Add('9', 0x39);
+		vkBuilder.Add('a', 0x41);
+		vkBuilder.Add('b', 0x42);
+		vkBuilder.Add('c', 0x43);
+		vkBuilder.Add('d', 0x44);
+		vkBuilder.Add('e', 0x45);
+		vkBuilder.Add('f', 0x46);
+		vkBuilder.Add('g', 0x47);
+		vkBuilder.Add('h', 0x48);
+		vkBuilder.Add('i', 0x49);
+		vkBuilder.Add('j', 0x4A);
+		vkBuilder.Add('k', 0x4B);
+		vkBuilder.Add('l', 0x4C);
+		vkBuilder.Add('m', 0x4D);
+		vkBuilder.Add('n', 0x4E);
+		vkBuilder.Add('o', 0x4F);
+		vkBuilder.Add('p', 0x50);
+		vkBuilder.Add('q', 0x51);
+		vkBuilder.Add('r', 0x52);
+		vkBuilder.Add('s', 0x53);
+		vkBuilder.Add('t', 0x54);
+		vkBuilder.Add('u', 0x55);
+		vkBuilder.Add('v', 0x56);
+		vkBuilder.Add('w', 0x57);
+		vkBuilder.Add('x', 0x58);
+		vkBuilder.Add('y', 0x59);
+		vkBuilder.Add('z', 0x5A);
+		vkBuilder.Add('*', 0x6a);
+		vkBuilder.Add('+', 0x6b);
+		vkBuilder.Add('-', 0x6d);
+		vkBuilder.Add('.', 0x6e);
+		vkBuilder.Add('/', 0x6f);
+		vkBuilder.Add(SPECIAL_RSHIFT, 0xa1); // VK_RSHIFT
+		vkBuilder.Add(SPECIAL_LCTRL, 0xa2); // VK_LCTRL
+		vkCodeMapping = vkBuilder.ToImmutable();
+
+		keyboardLayout = GetKeyboardLayout(0);
+		var scBuilder = new Dictionary<ushort, ushort>();
+
+		foreach ((var _, var vkCode) in vkCodeMapping)
+			scBuilder.Add(vkCode, MapVirtualKeyEx(vkCode, MAPVK_VK_TO_VSC, keyboardLayout));
+		scanCodeMapping = scBuilder;
+	}
+
+	private static ushort GetScanCode(ushort vkCode)
+	{
+		if (!scanCodeMapping.ContainsKey(vkCode))
+			scanCodeMapping.Add(vkCode, MapVirtualKeyEx(vkCode, MAPVK_VK_TO_VSC, keyboardLayout));
+
+		return scanCodeMapping[vkCode];
+	}
+
+	[DllImport("user32.dll")]
+	private static extern IntPtr GetKeyboardLayout([In] uint idThread);
+
+	[DllImport("user32.dll", CharSet = CharSet.Auto)]
+	private static extern ushort MapVirtualKeyEx([In] int uCode, [In] uint uMapType, IntPtr dwhkl);
+
 	[DllImport("user32.dll", SetLastError = true)]
 	private static extern uint SendInput(uint numberOfInputs, INPUT[] inputs, int sizeOfInputStructure);
 }
diff --git a/AutoKkutuLib/Game/WebSocketHandlers/BasicWebSocketHandler.cs b/AutoKkutuLib/Game/WebSocketHandlers/BasicWebSocketHandler.cs
index a9899b3..deab5b8 100644
--- a/AutoKkutuLib/Game/WebSocketHandlers/BasicWebSocketHandler.cs
+++ b/AutoKkutuLib/Game/WebSocketHandlers/BasicWebSocketHandler.cs
@@ -42,7 +42,7 @@ public virtual async ValueTask RegisterInGameFunctions(ISet<int> alreadyRegister
 		if (!await Browser.EvaluateJavaScriptBoolAsync(Browser.GetScriptTypeName(CommonNameRegistry.WebSocketHelperRegistered)))
 		{
 			var script = helperMapping.ApplyTo(LibResources.baseWebSocketHelperJs);
-			LibLogger.Warn<BasicWebSocketHandler>("WebSocket Helper injection result: {result}", await Browser.EvaluateJavaScriptRawAsync(script));
+			LibLogger.Debug<BasicWebSocketHandler>("WebSocket Helper injection result: {result}", await Browser.EvaluateJavaScriptRawAsync(script));
 		}
 	}