Sweet Punishment - I`m the Guard`s Personal Pet-

"Sweet Punishment: I'm the Guard's Personal Pet" (甘い懲罰～私は看守専用ペット, Amai Choubatsu: Watashi wa Kanshu Senyou Pet) is a Japanese adult romance manga written and illustrated by Shou Izumi, later adapted into a short-form anime series. The story is set in a near-future prison and revolves around Hina Saotome, a woman falsely imprisoned, and Aki Myoujin, the elegant and sadistic prison warden. Hina becomes Myoujin's "personal pet", subjected to his "heartless yet sweet domination," including physical examinations and manipulated encounters with her boyfriend during prison visits. As Hina grapples with the harsh realities of prison life, she also finds herself increasingly drawn to the warden and his unconventional treatment, developing a complex and taboo relationship with him. The anime explores themes of dominance, submission, and forbidden desire with its explicit content and intense storyline.