GVH-519 - My best friend's sister, a black gal, noticed my stamina and used me as a practice target for her rolling fellatio and suction kissing, leading to multiple ejaculations.

Ranka, the best friend's sister, asks to use the protagonist as a practice partner for fellatio, but things escalate. With her natural gal instincts, she performs advanced rolling fellatio that defies her beginner status. Overwhelmed by her unpredictable movements, he ejaculates in her mouth, which she swallows, then pushes for a second round. Her insatiable curiosity leads to creampie sex with her large hips, resulting in an intense session.