Hwansaeng Boss

A gangster named Lee Gang-Jin, once the top figure in the underworld after unifying the country through force, is betrayed and killed by his close associate Jo Du-Yeong. At the moment of his death, he is reborn into the body of another Lee Gang-Jin, a high school student who committed suicide due to school violence. Meanwhile, the Gang-Jin Faction initiates a recruitment event called the "Kkanglin Audition," attracting delinquent teenagers. Seeking to correct past mistakes, the reborn Lee Gang-Jin resolves to reclaim control of the faction he originally established.