Du-Sik is in a bind. After making off with the takings from the gay bar where he worked, he seeks refuge in a small, coastal town. As his funds dwindle, he desperately needs a way to make ends meet. Still, a boy’s gotta eat! So he dives into a clam house to satisfy his cravings. But with no money to pay, he dashes off leaving Ju-Ha, the server, to foot the bill. Later on, when Du-Sik returns to pay his debt, he’s greeted by a sordid scene that offers a tantalizing glimpse of the solution to his money problems. For within Ju-Ha's beautiful shell lies a secret treasure waiting to be drawn out. And Du-Sik is just the man to do it. 
 
(Source: Lezhin, edited)
 
Note: Chapter count includes 2 epilogue chapters and 20 side story chapters.

Baek Seung-Hyeon has lived his whole life as Shin Jae-Il's (Yakuza boss) right-hand man. His older brother, who was like a father to him, got married, and Seung-Hyeon entered a late adolescence. After the noisy wedding, Seung-Hyeon wandered the streets alone and coincidentally ran into Yuta, who he had a connection with in Japan 10 years ago. Yuta is pretty and gentle. After a long time, he tried to relieve his stress by having a drink with this insignificant guy, but Yuta's expression quickly changed and he started saying the most unpleasant things. Who would have thought that was the beginning of all these shitty incidents. Yuta barged in without warning. Because of him, Seung-Hyeon's flawless life took a completely different turn... (Source: Lezhin, translated)

Seung-Hyeon Baek