Cute H-cup big sister Aimi Yoshikawa's first shota work! When she was left alone with her good friend, she found out he was a boy with an adult cock and an insatiable libido, even though he was younger than her! Even after ejaculating 15 times a day, his cock still hadn't lost its strength! The frustrated big sister became addicted to creampie sex with the insatiable Masao...