Doukyuusei no Osananajimi ni Ero Doujin Mitai na Koto Suru. The Motion Anime

Summer holidays have arrived, but the main character can't relax. Every day his childhood friend Rin hangs out in his room, she lives in the next apartment. She lies on his bed and reads his manga all day, periodically asking him to run to the store to buy something. One day the hero went for ice cream and, returning home, found Rin sleeping. Suddenly he had a strange idea...