The impatient younger brother is gently trained by his kind older sister to overcome premature ejaculation! The younger brother was dumped by his girlfriend because he came too quickly, and the whole class laughed at him. Seeing her pitiful younger brother, his sister Sora couldn't bear it anymore and decided to have sex with him both at home and at school until his premature ejaculation is cured. Sora's pussy feels so good that he can't help but cum, but even then, she gently accepts him and encourages him to try again! She thoroughly trains him until he can satisfy her.
