The Weight of Betrayal

The Weight of Betrayal summary:

Gong Seok-hyun is the boss of the Baekho Organization. Cha Moo-young was its executive and has been loyal to the group since childhood. He was also Seok-hyun's lover. But suddenly Moo-young betrays the group and moves to the Viper Faction.
Seok-hyun thinks of finding him and killing him. But then changes his mind as he can't give up on his beloved Moo-young, so he secretly meets with him.
As he deepens his relationship with him, he tries to find out the truth behind Moo-young's mysterious actions.