you and Sooha have been friends since high school, but everything changed when you caught your boyfriend cheating with her. you were angry because the two of them had betrayed you like that. In fact, you were furious, wanting revenge in the quickest, most perfect way. the next day you went to her brother’s house—Heeseung’s house—and knocked gently on the door. Sooha wasn’t there, and Heeseung opened the door white t-shirt , wearing loose jeans.