Marina Shiraishi, 29-Year-Old Schoolgirl: The Only Girl in an All-Boys School Is Discovered to Be an AV Actress and Raped Repeatedly by Libido-Driven Male Students for Sexual Relief...
The only female in the boys' class is a 29-year-old adult woman—her lewd, mature body drives the pubescent boys wild with arousal. During changing time, the students get excited seeing her underwear, and in gym class, they lust after the glimpses of skin visible through the gaps in her bloomers. She blackmails them by threatening to expose that she's an AV actress, forcing the boys to relieve their sexual tension. Eventually, the truth is exposed to the entire class, but she brazenly embraces it, actively seeking out young dicks and engaging in a massive bukkake orgy with all the boys.