恋人は友達の母と姉 ひと夏の秘密体験

A boy goes to visit a friend's house in the countryside for the first time in several years. He is reunited with his old crush, his friend's mother, and his first love, his friend's sister. "Do the sister's F-cup boobs feel good?" "Let auntie take care of Toma-kun's first time." Under the same roof with his friend's family, a sense of immorality is mixed with a sense of excitement. A boy will have a summer of sweet experiences with mother and daughter. (Source: DLSite, translated)