Cheese in the Trapチーズ・イン・ザ・トラップ; 치즈인더트랩; 치즈인더트랩 (순끼); Сир у пастці

Having returned to college after a year long break, Hong Sul, a hard-working over-achiever, inadvertently got on the wrong side of a suspiciously perfect senior named Yoo Jung. From then on her life took a turn for the worse and Sul was almost certain it was all Yoo Jung's doing. So why is he suddenly acting so friendly a year later?