Who am i? {Namjin ff}

In the dark underworld of the city, Kim seokjin ,the most feared Mafia Boss from the Kims, maintains the power with an iron grip.
But Jin's undercover life is threatened because of high number of enemies ,specifically this one rival family.
Namjoon , a mission leader from a rival mafia family is determined to unravel his secrets.

As tensions rise and loyalties are tested, an unexpected encounter happens between Jin and namjoon, resulting in formation of unexpected alliances