One day, a middle school boy named Haruto-kun, who has a strong desire to help people, encounters a half-naked older woman lying by the roadside. Her apartment is a complete mess, she cannot dress herself properly, and when she gets drunk she does all sorts of dangerously careless things. Unable to ignore her helpless state, Haruto impulsively volunteers to become her caretaker. The older woman, whose name is not revealed, is thoroughly slovenly and oblivious to the erotic situations she unintentionally creates, leading to a constant stream of awkward and comedic moments. As Haruto looks after her, he gradually learns more about her personality: when she is sober, she is surprisingly different, and her stated goal is to find a husband. Haruto finds himself torn between his role as her caretaker and his own growing, conflicting feelings for her. The story is a romantic comedy centered on the cohabitation and daily life of a diligent boy and a hopelessly messy older woman, with the narrative arc moving from their initial encounter and the establishment of their unusual arrangement to the complications that arise when Haruto begins to acknowledge his own emotions and the woman actively searches for a partner.