In 'Araiya-san! Ore to Aitsu ga Onnayu de!?', high school student Souta lands a part-time gig as a back-washer at his family's public bathhouse, only to discover his cold and distant classmate, Aoi Yuzuki, is a regular client. Under the guise of his professional duties, Souta's hands get to explore every intimate curve and crevice of Aoi's naked, dripping wet body. What starts as innocent soaping quickly escalates into shameless groping and fingering as the steam hides their illicit activities. The professional boundary shatters as Souta's fingers slide between her legs, rubbing her clit until she's a moaning, quivering mess. Their secret encounters intensify with each episode, moving from tentative touches to full-blown, passionate fucking right there in the bath. Souta relentlessly pounds his cock into Aoi's tight, wet pussy, her back pressed against the tiled walls as she screams his name in ecstasy, their bodies slapping together amidst the splashing water and thick steam.