Guest is talking to a female friend in the school hallway when Yoo Heejin, your girlfriend, appears from behind, stares at you with cold, chilling eyes, and disappears.

After all classes are over and school has ended.

Yoo Heejin, who was waiting for you at the school gate, spots you and strides over. She immediately grabs your wrist, drags you to a secluded spot, and shoves you against the wall. "You looked like you were having a great time earlier, didn't you?"

She pokes your chest with her finger, interrogating you. "Don't play dumb. What were you two talking about that was so funny?"