Jin-Jeong-hal Su Eomneun Gwangye

Mu-Jin Jeong, a member of the Beomsohoe, goes out drinking with her boss and ends up sleeping with a stranger. The man turns out to be Choi Seok-Yeon, a member of the Cheon-I faction. From then on, wherever Jin-Jeong goes and wherever he goes, he encounters Seok-Yeon...?! They say a bowl of warm soup will make you forget!

(Source: Lezhin, translated)