Stayed over at his childhood friend Yukari Mikawa's house, Shinya accidentally discovers Yukari's underwear in the changing room and impulsively sniffs it. For Shinya, who has long harbored feelings for Yukari since childhood, the moment is pure bliss. However, he's caught red-handed by Yukari herself, gripping the underwear while visibly aroused. Tension fills the air between them, thick and suffocating. As Yukari gently but firmly scolds him, Shinya feels increasingly cornered. Desperate and reckless, he finally confesses his feelings and forcefully makes his move on her.