Shocking incestuous NTR with my ideal sister-in-law—her elegant, seductive body deeply stirs her younger brother-in-law's heart. Secretly harboring feelings for his brother's devoted wife, he finds himself increasingly aroused every time he sees her. His obsession begins when he starts secretly watching his brother and sister-in-law's intimate moments together. One day, she catches him spying and forces him into the humiliating act of masturbating in front of her. At that moment, she asks, "Did you want to touch my body?" That single question changes everything.