My stepfather, whom I absolutely despise, finds utterly repulsive and insane, is in love with me, a female student... Kano Yura SSIS-328

Living with her stepfather, who remarried her mother, but... his true purpose was to violate "herself," a high school girl. Living under a roof with nowhere to escape, she endured threats, being secretly filmed, given suspicious drugs, and having her body constantly licked. Despite knowing she loathed him... she was forced to have her penis inserted into him, and gradually, both physically and mentally, succumbed to the quagmire of her stepfather's penis... "Mom... I'm sorry." This is a classic S1 humiliation drama about a pure young girl being violated by her stepfather's madness.