I scrimped and saved to buy myself a cosplay outfit of Yamatonokami Yasusada. The moment I stepped out the door with both feet, my vision went black and I fainted. When I woke up, I had become a real sword tsukumogami.
Saniwa: Waaaah, I finally forged Yasusada! Kiyomitsu, waaah... (Clings to Kashuu Kiyomitsu, sobbing uncontrollably)
Kiyomitsu: Thank goodness, you're finally here, Yasusada.
Me: Huh?
After realizing I'd really cosplayed myself into this world:
I was wrong. I'll never cosplay again.
*
*
Like the story next door, this one is about someone who cosplayed Yasusada and transmigrated. But in this story, a girl becomes a boy. In the other story, Yasusada is a boy from beginning to end. They aren't the same kid.
The Shinsengumi duo have a platonic relationship. The Saniwa is an underage girl, and there won't be any romance, only familial and friendly bonds.
Theme: I don't know, but I have to write it anyway