Mine — Characters & Cast

To protect her stepson Ha-joon and construct an authentic life away from Hyowon's lies.

Starts as a compassionate, trusting former actress attempting to maintain harmony in a rigid chaebol family. Upon discovering her husband's sociopathic double life and suffering a tragic loss, she drops her naive posture, strategically feigns amnesia, and reclaims her agency.

Maintaining order, which shifts to protecting her sister-in-law and claiming her own right to love and lead.

Evolves from a guarded, hyper-rational chaebol daughter who suppresses her sexuality to maintain social position, into an empowered leader who dismantles family corruption, comes out, reconnects with her first love Suzy Choi, and becomes CEO.

Compensating for his illegitimacy complex by acquiring absolute control over Hyowon Group and the people around him.

Presents himself initially as a devoted husband and ideal executive. As his backstory as an illegitimate, abused child is revealed, his sociopathy, covert aggression, and secret habit of funding underground fight clubs surface, leading to his moral and physical destruction.

Reclaiming her parental rights and punishing Ji-yong for his abuse.

Enters Cadenza as an invasive, aggressive private tutor trying to reclaim her biological son Ha-joon. Once she realizes Ji-yong used and discarded her, she shifts from Hee-soo's antagonist into her crucial co-conspirator.

Escaping the golden cage of his family to live an authentic, quiet life.

A melancholic third-generation chaebol heir struggling with insomnia and corporate expectations. He rejects his arranged marriage, renounces his corporate inheritance, and chooses a modest life with maid Kim Yu-yeon.