when 2 of the top agents in the port mafia and ADA come together to go to the world of MHA, how long can they hold out their true identities until they're found out, and what's going to happen when they do get found out.

Raised in the Mafia, the infamous mystery 'White Reaper' was given a time-off away from work by the Boss. Not knowing what to do, the boy found himself a job at a cafe which so happens to be on the ground floor of the ADA. Or Mafia Atsushi mets the gang in a different way and chaos ensures when a certain Sudical mania fell for him.