Read End It manhwa
The flawed Omega Joohae tries to pay off the debt that has been bothering him with just one painting and gives up on life in the face of overwhelming futility.
Woosung Alpha Jin-wook, who was watching him, immediately runs to rescue him and Joo-hae gets a strange feeling from Jin-wook, who smiles bitterly.
“Let’s just say…I’m the one who will keep you alive.”