- Heroine: Li Yimo (formerly known as Li Yuan) - She was separated from her family due to a fire when she was young, and was adopted by the Li family. She has a soft personality on the outside but is strong on the inside. She is full of gratitude to the Li family. Later, she gradually found herself amid the mystery of her identity.
- Female supporting role: Li Siyi (formerly known as Li Jinli) - the biological daughter of the Li family. She was mistakenly transferred to the Li family when she was young. She appears to be lively and cheerful, but in fact she has strong hostility towards Li Yimo due to jealousy and misplaced identity.
- Male protagonist: Gu Siyu - a business elite who was once the ex-boyfriend of Li Yimo's nominal "brother" (a distant relative of the Li family). He is calm and wise, and gradually becomes attracted to Li Yimo while getting along with her, becoming her guardian.
- Supporting characters:
- Lin Luoxu: Gu Siyu's childhood sweetheart, who has a good impression of him and is an assist or a small obstacle to promote the relationship between the male and female protagonists;
- Jiang Xingyun: Dr. Wen Run, who met Li Yimo accidentally, silently protected her and was her warm strength in difficult times;
- Li Jiayan: The son of the Li family and Li Yimo's brother, he has a calm personality and later becomes a key figure in uncovering the mystery of his identity.
Intention: Break 50,000 words!
