Muteikou Shugi

Shinya, who is currently in his twentieth year, meets Oz, a student in the pharmacy department who is feared to be a witch. Shinya is pushed around by Oz, who makes him drink a mysterious medicine and gives him an "absolute obedience order"...

Collection of stories:

1-3) Muteikou Shugi (2020)
4) Dada (2021)
5) Oi! Kase (2021)
6) After Muteikou Shugi (vol. exclusive)