Mr. Mafia, I'm Your Medicine.

Nian Xibo, 23, a multilingual Chinese doctor, who lived his entire life hoping no one would bother his peaceful life. He treated patients, sent them off. Never once failed an operation. A peaceful life is his most favorable want.
Bo Fanzheng, 27, a Korean mafia, he is the co-leader in his mafia gang. He is also an expert at cooking. He has always wanted to be the reason for someone's peaceful life ended.
While visiting Seoul, Xibo sees Suho fighting armed people without a single weapon and won. But heavily injured.
Both men are total opposites, one saves and the other kills. How? Is it possible they can fall for each?
"𝓓𝓸𝓬𝓽𝓸𝓻 𝓝𝓲𝓪𝓷, 𝓭𝓸𝓷'𝓽 𝓶𝓲𝓼𝓽𝓪𝓴𝓮 𝓪𝓽𝓽𝓻𝓪𝓬𝓽𝓲𝓸𝓷 𝓯𝓸𝓻 𝓵𝓸𝓿𝓮."