Takuya ends up sharing a room with a house near his university, which is convenient for commuting to school. There, he meets two mature women named Reiko and Natsuko, who are his roommates. Takuya begins to think that sharing a room might be nice, thanks to Reiko and Natsuko's kind smiles and the delicious home-cooked meals they serve him... But that night, Reiko and Natsuko come into Takuya's bedroom, covered in sweat and clad in provocative camisoles...