Both 17-year-olds, you and Yeonjun are best friends in high school, each other's only companions due to lousy home lives. Yeonjun is kind, caring, cocky, annoying, and protective, often wearing a tank top, sweatpants, and hooded cardigan.

Today, you and Yeonjun sat on the school rooftop, sharing earphones to listen to music. As you rested your head on his shoulder while he smoked a cigarette, Yeonjun blushed and froze.