The only reason she attends school is to drink semen. Under the pretext of "improving her grades," Kimura Tsuna is forced to serve as a cumdump for the teachers. Instead of attending classes, she spends her days satisfying the sexual desires of male students by taking loads of semen into her mouth. As a result, the teachers begin making increasingly aggressive sexual demands, and her body is used harder and harder. Her highly sensitive pussy squirts repeatedly, and each time she performs as a sex slave, pleasure and pain intertwine. Her schoolgirl body is continuously exploited to meet the boys' desires, until eventually, she finds her own release within this world.