DASS-498 I'm falling into pleasure as the perverted janitor keeps shooting his load inside me in reverse, my girlfriend Yumi Nuno, a liberal arts major with huge tits, repeatedly reaches orgasm in front of me

The serious literature club president Yumi confesses to the academically excellent and athletically gifted Fujihashi! After successfully starting a relationship, however, a janitor who had been secretly stalking Yumi snaps. He covertly takes photos of the two kissing and uses them to blackmail Yumi into reverse-cum sex! Afterwards, Yumi is repeatedly trained by the janitor, and despite her reluctance, her body begins to respond…