Other Title: Upsilon ; イプシロン ; 입실론

Author: G-wagon,Gyunse

Summary: Kang Seong Woon was a poor but ordinary college student. Suddenly, his mother goes missing, and he is forced to do anything for money. He takes a break from school and starts working as a part-time when a mysterious person named Seo Beom-eui appeared before his eyes. He thought the man was just a random annoying bar customer, but for some reason he keeps ending up by Seong Woon's side, and a ...

Latest Chapters: Ch.4 ,  Ch.3 ,  Ch.2 ,  notice. ,  Ch.1 ,