Toshiya has decided to live in the house of her aunt Kasumi, who is her first love partner. Living under one roof with the longed-for Kasumi ... Just thinking so, Toshiya has an uncontrollable desire, and she looks into the place where Kasumi is taking a bath. Kasumi was lonely comforting her body there. Knowing Kasumi's frustration, Toshiya makes a courageous proposal ...