The Demon Slayer Teacher Who Excels at Running Away

Kibutsuji Muzan is an art teacher at Tokyo Metropolitan Suiran High School and a moderately well-known modern painter. One day, his colleague Iwakatsu tells him that his younger brother will be transferring to Suiran High, with the goal of getting into Tokyo University of the Arts.

At first, Mr. Kibutsuji doesn't think much of it.

Until the moment he meets the younger brother, when memories of his past life suddenly awaken.

Oh, damn it, Tsugikuni Yoriichi is still chasing me!

The three things Mr. Kibutsuji must protect in this life:

1. His own life 2. His students 3. His life from his students' threats

After arriving in the familiar Taisho era, Mr. Kibutsuji faces a life-or-death problem, but he soon realizes the answer.

"I have a Tanjuro, I have a Tanjiro, wow, a two-star Tsugikuni Yoriichi!" On this day, every demon in the world becomes a thousand times weaker!

Just as he finally manages to combine them into a two-star Tsugikuni Yoriichi, the five-star, fully ascended hero, Saber-class, lifelong rival and eager student in his class, Tsugikuni himself, makes a grand entrance.

Mr. Kibutsuji: I'm gonna lose it!

* An extremely OOC work

* Includes the beloved demon-transformation plotline

* Includes a brother-sister roleswap AU

Theme: World peace