Cosplaying as Boss Dazai, I Discovered This Wasn't So Simple

Blurb One: As a perfectionist cosplayer, I put together my first-ever cosplay of the boss, Dazai Osamu. But on my way to the convention, I transmigrated? And it seems this isn't an ordinary transmigration, either!

Blurb Two: Yokohama in the IF world is facing a major crisis. The Guild has suddenly arrived, but its purpose is unknown. Meanwhile, the Rats following in its wake are secretly plotting something. Has Akutagawa Gin, former secretary to the Port Mafia boss, been kidnapped by the Guild? The Port Mafia is at risk of having its information leaked! Can Akutagawa Ryunosuke, now with the Armed Detective Agency, really ignore this half-true, half-false kidnapping report? Will the already-broken Three-Way Standoff be reestablished through this incident? The Port Mafia is in grave danger, and so is the Armed Detective Agency!!! Will the Special Division for Unusual Powers, standing on the sidelines, simply let these uninvited guests do as they please? Every clue seems to point to the Port Mafia's former boss, Dazai Osamu. One day, Sawaki, a Guild member who can see the dead, picks up an unreliable adult man who claims to have lost his memory… Another perspective: After Shi, who cosplays as Boss Dazai, steps into this world, they find that none of it seems to have anything to do with them. No one can see them, and just as they are about to wash their hands of it, someone grabs them by the...

Theme: Building a better Yokohama