Doldarie Doreul Deonjiji Masio

Joo-Seok and Na-Deul are entangled in everything they do. Every time, Na-Deul loses first place to Seok by a hair's breadth. In order to get away from him, he waits until he graduates from high school, but just like the shaman said, "He's a guy who'll stick by your side even if he dies," the two meet again at the same university. Then one day, Joo-Seok comes to the convenience store where he's working part-time and suddenly confesses to him while crying?! Since that day, Joo-Seok has been openly on the offensive with his love, and the more Na-Deul tries to run away, the more strangely he gets entangled...

(Source: Bomtoon, translated)