The Number Has Changed

I called my ex-girlfriend's number. But a man answered… What should I do in this situation? "You son of a bitch, put Yeonmin on, put Yeonmin on!" - ……This number has recently changed. As it turned out, the man on the phone was Ryu Si-hwa, the face of Korea University and a senior in the same department. Do-hyun wanted to end it with an apology, not wanting to lose face, but he gets entangled with Si-hwa again in a group project. While bickering, he finds himself falling for him more and more……. * * * "Just once, I'm not asking for sex, but can't you just kiss me?" "……I'm going crazy." In the end, he went back to the beginning. He was so hesitant and careful when apologizing, but when he...