Mairimashita! Iruma-Kun Mafia AuMairimashita! Iruma-kun Mafia AU; Welcome to Demon School! Iruma-kun (Mafia Alternate Universe); 魔入りました!入間くん if Episode of 魔フィア; Welcome to Demon School! Iruma-kun: If Episode of Mafia; Mairimashita! Iruma-kun: If Episode of Mafia
The beloved characters of Mairimashita! Iruma-kun star in this Mafia-based spinoff! Young Iruma saves an injured mob boss from death... and then becomes his grandson!?