1) Su Nuan (25 years old)
- Gentle and pleasant on the outside, tough and independent on the inside
- Background: Jewelry designer, illegitimate daughter of the Su Group, whose mother is seriously ill and needs high medical expenses.
- Features: Extremely talented in design, forced to sign a contract marriage to save his mother
2) Li Mohan (28 years old)
- President of Li Group, an upstart in the business world
- Background: Lost parents in family strife, needs marriage to obtain inheritance
- Characteristics: Cold appearance, severe insomnia, and can only sleep peacefully with the heroine
3) Su Ya (26 years old)
-Su Nuan's half-sister, A-list star
- Background: The real daughter of the Su family, who has been secretly in love with Li Mohan for many years.
- Features: Elegant and generous on the surface, deep and thoughtful in reality
4) Cheng Yu (27 years old)
- Li Mohan's special assistant and friend
- Background: Born in a medical family but chose to go into business
- Features: Humorous, great support for the relationship between the male and female protagonists
5) Lin Shufen (50 years old)
- Su Nuan's biological mother, a former ballet dancer
- Background: She was deceived by Su's father into giving birth to Su Nuan, and now she is suffering from cancer.
-Characteristics: Gentleness and toughness, the heroine's spiritual support
