A manga about Shirou Emiya who went to save Rin Tohsaka from captivity and is transformed into a female slave through physical feminization and brainwashing[Fate/ stay night)
Taisou Shoujo ga Chuunen Kyoushi Daisuki Maso Mesu Bitch ni Naru | Gymnastics Girl Becomes Masochistic Slut Who Loves Her Middle-Aged Instructor
100-nichi-go ni Netorareru Kanojo ~Kiritani Shin Side~ | The Girlfriend Who Was Cucked After 100 Days - Shin Kiriya SIDE
A manga about a gymnast who becomes a masochistic bitch who loves her middle-aged teacher through a hypnotizing app