The Road to Fame Through Cosplay (Bungo Stray Dogs)

One day, at a certain club... Dazai cosplayer: "President, have you heard of the cosplay transmigration rule?" Fukuzawa cosplayer [unimpressed JPG.]: "I've never heard of any cosplay transmigration rule, but I bet you still haven't memorized your character's backstory." Dazai cosplayer: ? Dazai cosplayer: "Everyone else memorized theirs?" Everyone [nodding JPG.] "You actually memorized how to stab me!" Dazai cosplayer cries out in anguish. The next moment, five tall buildings appear in view. The cosplayers who have inexplicably teleported from indoors to outdoors: ??? Dazai cosplayer: ..."Oh, it's real. We've transmigrated?" Coming up... The fake double-black duo, like brothers, getting along wonderfully. The head of the family, Oda Sakunosuke, and Fukuzawa's headaches. I'm talking to you, Dazai cosplayer! Stop messing with Chuuya from the original world!!! Original-world Chuuya: Twice the mackerel, twice the death. Transmigrators: The Diamond Dogs, Ranpo, Akiko Yosano, and Oda Sakunosuke, nine people in total. Transmigration setting: School AU. [Updates are slow, so you might want to let chapters pile up.] Theme: World peace achieved.