Some web crawlers written by me.
Catch those comments which has Tappei's reply in Re Zero's comment section and analyze it and store those info in a CSV file.
Catch Re Zero text based on the index number and store it in a plain text file.
Catch the word number from Re Zero's info page, and compare it with previous record to check if Re Zero is updated.
And send an email to specific email address to notify him/her/it.