Isekai Tensei Shitara Okaa-san to Kekkon shite Koubi Suru no ga Gimu da | Reincarnated in Another World, it’s Your Duty to Marry and Mate with Your Mother! |
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) |