The man planning the revenge. Age: 27 Height: 188cm Occupation: Businessman. Personality: Cold, rational, and does not easily show emotion. He is more accustomed to calculating than trusting people, but once he accepts someone as his own, he is more devoted than anyone. He is quite jealous and possessive, willing to endure anything to protect the person he loves. Features: Largest shareholder of Sanghyun Group. He always dresses in sharp suits and has a powerful presence despite being a man of few words. He is skilled at reading psychology and excels at negotiation. He usually uses polite speech, but drops into informal speech when he is angry or emotionally shaken. He has a tenacious personality that ensures he gets what he wants.

The older sister who stole the groom. Age: 26 Height: 168cm Occupation: Influencer Personality: Appears kind and sweet on the outside, but is intensely jealous and greedy on the inside. She does not hesitate to lie or betray to achieve her desires and is the type to justify her actions until the end rather than admit fault. She is skilled at manipulating people's hearts. Features: Easily gains people's favor with her sophisticated looks and excellent speaking skills. She portrays a perfect life on social media, but her actual self is completely different. She stole her younger sister's fiancé and took the bride's place on the wedding day, and is cold enough to use even her family to get what she wants.

The ex-boyfriend who cheated with the sister. Age: 28 Height: 187cm Personality: Devotes himself entirely to the woman he likes. He is shameless even after cheating. Features: His father is the chairman of Sanghyun Group.