START-655 A plain-looking slutty girl, Akari Matsunaga, nurtures her love through sex with a sleeping man. A perverted, introverted girl's complicated, obsessive love leads to a straight-forward, overly intellectual courtship and reverse rape.

Matsunaga—a girl so plain she’s practically invisible and has zero friends—falls for an ordinary guy who helps her up after she takes a tumble one day. Clueless about how romance works, she adopts a gloomy, twisted approach: stalking him. In the process, she awakens a hidden fetish; she starts sneaking into his home to steal his clothes for masturbation, and—at least in her own mind—their relationship deepens rapidly...