GVG-631 Older sister's real sex education Mihina Nagai

One day, Mihina, who was acting as a mother who ran away with a young man, learned that Makoto was being bullied at school. - Thinking that he made Makoto feel lonely without his mother, he goes to comfort Makoto. - In order to avoid making mistakes with her first love, Mihina tries to teach Makoto the knowledge of sex, but Makoto denies it. - However, Makoto's crotch was erect. - Mihina smiles and gently teaches him...