The days of forced imprisonment and rape of innocent female students: The humiliating imprisonment in iron bars - Moe-Bo-Ling GNAX-052

One day, a female student named Rin fainted on her way home from school and was helped by a passing man. A few days later, Rin visited the man's house to express her gratitude with a gift, but after drinking a drugged beverage, she lost consciousness... Aoi Sora discovers she is locked in a strange cell, and the man who helped her is now sexually abusing her body...