[Bungo Stray Dogs] I Cosplayed as the Heroic Spirit Nation's Master and Ended Up in Yokohama

[This is one of those stories whose title doesn't match the plot. If the Heroic Spirit Country actually appears, it'll be near the ending XD]

Who I am doesn't matter. What matters is that I summoned Kunikida Doppo in FGO.

Yes, that Kunikida Doppo from Bungo Stray Dogs. Did those two IPs have a crossover while I wasn't looking?

Then I turned around and locked eyes with the Heroic Spirit.

Kunikida Doppo: "... (in Japanese) Kunikida Doppo of the Armed Detective Agency, answering the summons. Class: Caster. I'm currently on vacation. Pleased to meet you, Master."

Me: "...?" (I can't understand him.)

Me: "Wait, can't Heroic Spirits speak Chinese too? And you hesitated just now and clenched your fist, didn't you? I'm just an ordinary military police officer cosplaying as Dazai!"

Then, at a convention, I cosplayed as agency president Dazai Osamu. I accidentally took the Heroic Spirit's planner and chatted with my friend, who was cosplaying as Special Division for Unusual Powers director Sakaguchi Ango, while we recorded our original-character alternate-universe ideas. We joked about a story where the No Longer Human trio ruled Yokohama together. A friend cosplaying as Port Mafia boss Oda Sakunosuke was still doing their makeup on a video call and listened with great interest.

Then the three of us transmigrated to the main Yokohama timeline.

I suddenly remembered that the Heroic Spirit had said three times that the planner was a Noble Phantasm that had accidentally fused with the "Book," but I don't think I listened at all.

I lowered my head and looked at the "Book" in my hands, which was more or less the real thing.

Me: "..."

First-person narration from "my" perspective.

A short story with no CP.

Various headcanons and out-of-character portrayals, with a little crossover content, but not much.

If this story's too much for you, run and don't look back XD

Theme: Don't make yourself suffer so effortlessly!