I transmigrated to Japan's Sengoku period. My family is a powerful samurai clan, so even though I've been named heir and have to study a lot, at least I won't have to worry about making a living, right?
It's just that my twin sister is a little strange. She was born with strange flame-shaped markings, can't speak, and has hardly ever smiled.
Could she have a congenital illness? I can't help but feel more and more protective of this tiny, frail, pitiful girl.
As her older brother, I, Tsugikuni Michikatsu, swear to protect my little sister, Yoriichi Tsugikuni.
So I'm going to become the strongest in the world... Wait, Namu San, why are there supernatural creatures called demons in this world?
(A children's book that readers who haven't seen Demon Slayer can enjoy just as easily. No, really.)
(A short story, simply a Demon Slayer fanfic. The plot and characters are mostly original. Not a crossover multiverse adventure. A beginner's writing exercise.)
