Kyonyuu Try! Tanki Shuuchuu Chichi Momi Lesson

Shindo Mio, the hero’s half-sister, when asked by her student Kobakayawa Ayano how Shindo-sensei got such big breasts, replied that it was because my younger brother was squeezing them. Ayano had no choice but to ask our hero to squeeze her breasts too, so that they would become like Shindo-sensei’s.