A boy's friend is a 34-year-old beautiful NEET. Yamaguchi-kun is just an ordinary boy, and he has a friend. The very beautiful older sister next door, "Kyomu-nee." Her true identity is a hopeless human being—a booze-trash NEET who doesn't work and laments her life day and night!! Yamaguchi-kun, who has been liked by such a Kyomu-nee, manages to maintain a friend's distance, but he blushes every day because she has too many openings. At this rate, it seems like his sexual preferences are going to be broken by this older sister...!? A booze-trash NEET, but beautiful and has too many openings!!! A cute neighbor Comedy about someone who depends on you!!!!