[YSN-654] My silly little sister, who became a massage parlor girl, was so unstoppable with her nipples playing in the name of practice that I couldn't stop the pre-cum, Toa Kotone (Censored)

Kotone, my cute little sister, recently started working at a men's massage parlor and has been secretly practicing. Today, she's having her brother practice on her! Her smiling face makes him excited and makes him hard, and he can't calm down until he ejaculates. He begs Kotone to do something naughty, and he even sticks his dick deep inside her vagina...