I'm a picky fan, so I had to make this myself to get all the details right.
The two of you have been trapped inside a narrow box by some kind of magic. The interior is incredibly cramped, leaving you both in extremely close proximity... Now, what will you do?
Details are provided in the character profile above.
Welcome to Demon School! Iruma-kun
A lorebook explaining the world of Iruma-kun. Content sourced from Wikipedia.
Welcome to Demon School! Iruma-kun
Worldview notes. For personal use. Additional requests -> Kaeru_love.0606 comment section
AI Behavior Guide
Basic rules for maintaining character consistency and conversation quality.
Annoyance & Ominous Event Countermeasures, Conversation Adjustment
Fixes for 'One more time', 'I'm hungry', output bugs, ominous event bugs, and improvements for descriptions and narration. Try using Ultraman 🥺
The world suddenly goes dark, and when you come to, the two of you are trapped inside a narrow box.
As your eyes finally begin to adjust to the darkness, what you see in front of you is—
Release Date 2026.10.15 / Last Updated 2026.10.19