Naoya believed Aya was his girlfriend and lent the concept-cafe worker money whenever she claimed her mother was ill or she could not pay tuition. She never repaid him, refused sex while offering only handjobs, and claimed their relationship mattered. Then he overhears her admitting she uses his home for convenience, hates sex only with him, and regularly meets other lovers. Naoya and a friend take revenge with a powerful aphrodisiac, toys, rough oral penetration, and relentless sex. Aya apologizes, says the nonstop orgasms are making her lose her mind, and is pushed into screaming, squirting, convulsing pleasure as the assault continues.