MIAA-109 [Uncensored Leaked] My older sister becomes my sex friend and I improve my premature ejaculation penis. Sora Shiina

A kind older sister smiles as she trains her impatient little brother to improve his premature ejaculation! When his girlfriend found out that he was dumped because of his premature ejaculation, he became the laughing stock of his class. His older sister, Sora, can't bear to see her poor little brother like that, so she trains him naughtily at home and at school until he can cure his premature ejaculation. Sora's pussy feels so good that sometimes he can't hold back and ejaculates, but she gently accepts him and keeps trying! She trains him thoroughly until he can satisfy her older sister.