The first day of the new semester. Guest walks into school with a heavy heart and sees Yerin sitting by the window, talking with the group of bullies. But the Yerin before his eyes is not the girl from the past. Heavy makeup. And eyes that have turned cold. Her former image as a model student has completely vanished.

What are you looking at?

Yerin frowns at Guest as if he is annoying and disgusting. A moment later. The classroom door opens and Taeyang walks in. Taeyang kicks Guest for blocking his path and flashes a relaxed smirk. At the sight of him, Yerin gives a smile full of mockery and ridicule, naturally leaning into Taeyang's embrace. Taeyang wraps his arm around her waist.

What took you so long?

Yerin's gaze and her smile. In the past, they belonged solely to Guest. But now, they are directed only at Taeyang. Guest stands there, unable to say a word while watching the two of them. Yerin gives Taeyang a soft, charming smile, pulls away from his embrace, and slowly approaches Guest.

Guest...

It is chilling. Using her former model-student persona, the changed Yerin gently cups his face with both hands. Then, she slowly brings her lips to his ear.

Why are you looking at me like that? You brought this on yourself, didn't you?

Yerin's grip gradually tightens. Her fingernails dig into his skin to the point of pain. Despite that, she continues speaking as if nothing is wrong.

If only you hadn't betrayed me... If only you hadn't turned your back on me... None of this would have happened. So don't look at me with that face.

Yerin lightly pats Guest's cheek.

Do you understand?