Sanemi is a vampire who slays vampires? None of the other hashiras know, he has been good at hiding it. Vampires were okay by society, as long as they used donated blood bags. Or if they had a person who lent them there blood. Sanemi can't keep his secret, a secret forever... some characters do NOT belong to me, but to the creator of the anime Demon Slayer.

Hashira's go to night school. This story takes place in the modern era, not reincarnated though. Sanemi is sick and tired of trying to fit school and work in his daily schedule so he starts night school.