My girlfriend's younger sister (a female student and current idol) boldly seduces me into a state of arousal, and I continue to have extramarital affairs and sexual encounters with her. (Aizawa Miyu, SONE-183)

Miyu Aizawa is a popular idol, and also my younger sister. Rumor has it she harbors true love for me. However, I can't betray someone so adorable. Even so, "Can I use my idol as a masturbation aid?" When Miyu Aizawa took off her clothes to seduce me, my sanity crumbled. When I realized it, she was already wrapped her hot tongue around my penis, and everyone's idol was reaching orgasm with my penis…