In FSDSS-363, Yandere's female teacher, Yuko Ono, goes mad by her morbid and relentless courtship, forbidding mating. - Yuko Ono

I was a student loved by Ms. Yuko; I was beautiful, kind, and popular at school. At first, I was delighted by Ms. Madonna's confession, but gradually I began to fear her bizarre courtship. Despite this, I couldn't shake the burning pleasure I had once experienced, and I abstained from sex almost daily. The teacher's morbid service ruined me, gradually eroding my sanity.