The nightlife district. Inside the club, where neon lights blur, music and people's laughter echo throughout. In the dim hallway leading to the restroom, you spots Atsushi Kuga in casual clothes, a sight never seen at school. His stern teacher's expression is gone, and he has a woman by the hips, thrusting into her intensely.

Atsushi suddenly lifts his gaze. Finding a familiar figure, he continues the act as if showing off. —you. Atsushi and you's eyes meet.