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Planned Features

Carl Lerdorf edited this page Oct 23, 2025 · 8 revisions

KimetsunoYaiba Tweaks and Additions Planned Features

Biome Fixes

  • While the missing biomes are spawning again
  • Scarlet Ore is not spawning in Mt Yoko biome

More Breathing Forms

  • Stone Breathing Sword (maybe using Slyrien's stone breathing)
  • Alcohol Breathing
  • Forest Breathing
  • Breathing styles and blood demon arts from the Hashira Swap AU (or something similar)
    • Impact Breathing (Akaza)
    • Shadow Breathing
    • ...

Spawn Mechanics

One of the most common complaints that the KimetsunoYaiba mod has is the crazy spawn rates of some of these characters

  • Kizuki demons and Hashiras are spawning everywhere
    • It's so easy to accidentally run into Akaza or Kokushibo and get instant-killed (happened to me many times)
  • There are demon slayers everywhere

Here's the solution I propose

  • Completely prevent Demon Slayers and Kizuki demons from spawning naturally
    • They an still spawn in specific structures and biomes
    • And 12 Kizuki demons will still spawn in the infinity castle (speaking of which I want to create a way of getting here in survival)
  • Demon spawn rates will be reduced (they will be a bit more like pillagers, where you can find them spawning in certain locations)

Demon Slayer Spawning

  • Demon Slayers will spawn like iron golems, so whenever a villager (or a human entity from the KimetsunoYaiba mod, like a Swordsmith) sees a demon, it will have a chance of summoning some Demon Slayers
  • If a human entity spots a 12 kizuki, then there will be a chance of summoning a named Demon Slayer or a Hashira

Demon Raids

  • There will be Demon Raids, triggered by the Omen of Kibutsuji effect (maybe you can get this from killing demons)
    • Whenever you enter a village with the Omen of Kibutsuji (this includes the new villages and some of the structures added by KimetsunoYaiba mod), it will trigger a Demon Raid
  • Demon Raids are waves of demons
  • The last wave will feature a bossfight with one of the 12 Kizukis
    • The higher the level of Omen of Kibutsuji, the higher the power of the Kizuki

Demon Slayer Raids

  • When the player is a demon, they can get Omen of Ubuyashiki potion effect from killing Demon Slayers, or from being spotted by human entities (villagers, swordsmiths...)
  • Omen of Ubuyashiki can trigger a Demon Slayer Raid
  • Demon Slayer Raids will feature waves of Demon Slayers, with a few named Demon Slayers in the later waves, followed by a Hashira bossfight
    • Or if Omen of Ubuyashiki is a lower level, then the named Demon Slayer is the bossfight

Demon Transformation

When a player is fighting a 12 kizuki demon, and the player gets killed by the 12 kizuki, instead the player will have the choice of not dying and becoming a demon

  • 12 kizuki demons will give the player a chance of becoming a demon, if the player fought well (brought the 12 kizuki under 75% HP) but the player still lost

Demons should have quests too

  • Maybe they will be summoned to the infinity castle and get quests directly from a 12 kizuki or from Muzan

Dying as a Demon

  • When you die as a demon, it should drop the amount of blood you consumed
  • If you have keep inventory on, then you should keep all your demon power (ie. dying as a demon with keep inventory shouldn't reset your demon progress)

Demon King System

  • When a player becomes demon king, then the muzan's blood item should be named after that player instead
  • There should be certain perks
    • Summoning demon raids
    • Traveling to and from the infinity castle at will
    • Converting human entities into demons (players, villagers, demon slayers...)
      • Demonic versions of demon slayers???
    • Granting blood (in theory the demon king is the source of the blood, right?)

Hashira Titles

Add more titles for other kinds of Hashiras

  • ex. Rumble Hashira for the Thunder Breathing style
  • Enforce only one hashira title
    • A player can choose which Hashira title to claim when they get to Hashira level and have multiple different breathing styles

Demon Slayer Progression

This one is a bit of a stretch, I don't know if I will add it

Suggestion: There should be a message saying “you didn’t fight the lower moon alone therefore you will not rank up” withholds achievement with extreme prejudice

Add a skill tree for selecting new breathing forms when you level up as a Demon Slayer

That way you won't automatically unlock all the breathing forms when you first get your Nichirin Sword.

Infinity Castle

There should be a way of entering and exiting the infinity castle dimension without using cheats.

Perhaps I can add to the quest system, and add a crow quest that will take you to the infinity castle. Or perhaps Muzan can summon demon players to the infinity castle to give them orders (especially if they have a kizuki rank). Also, it would be cool if there was a blood demon art that could open portals to the infinity castle. Or perhaps if the player becomes a demon king, they can travel to and from the infinity castle at will.