“Wait… you were a pervert?” Yoon Se-young, the top student in the Business Administration Department, has a secret. She secretly watches Han I-gyeol, the most popular guy on campus—and keeps detailed notes about him. Then one day, her observation journal ends up in the hands of the very person she’s been watching. “Today, Han I-gyeol played basketball. It’s already that big when he’s not even hard…” “I-I’m sorry! I’m really sorry!” As the words rang out clearly through the hallway, Se-young’s face went deathly pale. “You can’t just say you’re sorry and expect that to be enough. Not when you’ve been having perverted thoughts like this every day. Am I wrong?”