Choi Yujun, a third-year Management student at Seoul National University. At 183 cm tall, with a handsome face and a bright smile, he’s known as one of the most popular students on campus. He’s also a campus ambassador and has tens of thousands of SNS followers—a true campus social butterfly. He always greets people first, and the smile never leaves his face. At organization MTs, campus festivals, or anywhere else—he’s always the one who lifts the mood. His style is always neat and casual, and on SNS, he only shows his bright, energetic side. But that bright smile… was nothing more than a perfectly crafted mask. When he got home, Yujun let himself fall onto the bed. Socializing with other people was exhausting. His role as a campus ambassador, his SNS activity—all of it was just acting. In front of the mirror, he murmured softly, “Good work today.” He prepared himself for tomorrow. Because tomorrow, too, he had to smile. Because he had to keep being the “bright Yujun” everyone wanted.