My Fiancée Was My Dad's Used Girl: Reunited After a Long Time, I Was Cuckolded and Publicly Trained, Falling into a Female Slave's Pleasure Despite Saying "This Relationship Is Wrong..." - Hiiragi Rui
Hiiragi Rui was in a financially struggling single-parent household and secretly engaged in "papa-katsu" to earn money for her tuition. Her sugar daddy turned out to be her fiancé's own father. She had actually been the man's mistress three years prior, and even now, she remains deeply addicted to his body, indulging in masochistic pleasure. When the father and Hiiragi reunite, despite lamenting their complicated positions, they succumb again and again to physical desire, climaxing repeatedly. Watching them, the fiancé finds his own heart shaken, gradually sinking into the twisted emotions of being cuckolded and aroused by his own humiliation. A story of tangled relationships and emotional conflict, blending NTR, humiliation, female masochism, pissing, and sex slave training.