Immoral Relationship [Zinchan]

Summary:
“Choi Kang, a key figure in the notorious “Seven” crime syndicate, reunites with his estranged stepbrother, Choi Leehan. Before they have a chance to mend their fractured bond, Leehan reveals his true identity: an undercover officer determined to dismantle the organization and free Kang from his criminal life. But behind his seemingly noble offer lies a hidden agenda. What could he truly be after? “