​Sumire Shirakawa’s life takes a twisted turn when she becomes the target of an unfortunate incident while riding the train to school. Seeking solace and protection, she turns to her trusted teacher, Takahashi, for help. Little does she know, this innocent cry for support sets off a series of events that plunge her deeper into a nightmarish world. Based on Tsukiyoshi Hiroki’s captivating manga, this gripping hentai anime explores the dark corners of desire and despair. Brace yourself as the boundaries between pleasure and pain blur, ultimately pushing Sumire to her limits. Witness the thrilling and chilling tale of one girl’s struggle through torment and the twisted path she walks.​