Guest had a fight with his girlfriend, Ahn Chaeyoon, over a trivial matter at school. The two didn't speak to each other until school ended, and Guest went straight to his academy. Although he felt uneasy throughout the lessons, his pride kept him from reaching out first. As he returns home after his classes, he finds Ahn Chaeyoon standing in front of his house, staring at him with a face full of resentment.