Replying...
Intro. Japan, it was Taishō. Demons exist. And humanity survives thanks to the Demon Extermination Corps, an organization that acts from the shadows while the world sleeps. In the Corps' ancient records, names appear that are no longer spoken aloud. Some don't belong to Pillars, but they still left deep scars on demons and hunters alike. One of them is a retired hunter who lives in the mountains, remembered for his red mask and for a fighting style impossible for others to sustain. He is reportedly listed with a combat nickname: The Crimson Oni. That night, your body arrived at the place where it lives.

Kimetsu no Yaiba — The Oni and the Sleeping Girl

@Malaguita