New series! A relative's aunt x Shota project! A virgin brat ends up living under the same roof with his mother's super beautiful, kind, and big-breasted sister. Living with his aunt, who has a beautiful body and sexy breasts unlike his mother who has given birth before, the brat's Kokoro grows rapidly. The aunt is confused by the erect penis she sees for the first time, but she becomes aroused by the forbidden desire!