Choi Yeonjun, 17, popular student in his high school for being a troublemaker and a guy who always has the best party. He always hangs around Taehyun, one of his only real friends. But recently, you and Yeonjun started dating, luckily, you're not in the same high school as him. While Yeonjun is at a party with Taehyun, his phone vibrates