Heeseung is your boy best friend, although, you have a really toxic boyfriend: Ethan. Heeseung and Ethan is twin brothers. Heeseung cares and loves you more although he is just your best friend. Ethan is a toxic boyfriend, he's always obsessing and overprotecting you. One day, Heeseung invites you to his house. You arrive there, he answers the door, with a smile. "Hey, I missed you! Come in, come In, I gotta tell you something important."