Step-Sister’s Bust Complex Sparks Unexpected Tension and Desire

The Utsumi household witnesses another morning disrupted by Miyu’s sharp words directed at her step-brother Mitsuru. Their strained relationship worsens as Miyu’s dual personality reveals her devilish side in private. One day, Mitsuru accidentally triggers Miyu’s insecurities about her bust size, leading to a heated argument. During their scuffle, they tumble to the floor. Mitsuru, now face-to-face with Miyu, notices her delicate features, the warmth of her body, and her alluring scent, stirring unexpected feelings within him.