My impatient little brother's premature ejaculation was improved with the help of his kind older sister's smile! My brother, who was too premature to be dumped by his girlfriend, became the laughingstock of the whole class. My sister Sora couldn't bear to see her poor brother like that, so she practiced with him at home and at school until his premature ejaculation was cured. Sometimes, Sora's pussy felt so good that he couldn't hold back and came, but even then, she accepted him kindly and challenged him again and again! It was a thorough strengthening until he could satisfy his older sister.
