Tachibana Sitsuki's life for the first seventeen years was ordinary, until he was pulled into the world of Bungou Stray Dogs by a vest system and had to play crazy.
System: [Come on, host, I believe you can do it]
Tachibana Sizuki: Haha^_^
Note: The protagonist has not watched Bungou Stray Dogs World before traveling through time.
Purpose: Save yourself