BANK-014 Mana Hirate, the older brother who has sex with his younger sister while their parents are out

Mana is famous in her hometown for being cute, and is often asked out by various men, which is a nuisance. - Since he is still young and has a calm personality, he is unable to clearly refuse, and often his older brother has to deal with the situation on his behalf. - Mana felt that she could rely on her brother, and always thought that if she were to get married, she would want someone like him. - One day, I saw my brother masturbating...