Mi Su --- Chen Yao
Twin sister Mi Su was Qin Yun Sheng's first love. As her illness worsened, Mi Su wanted to spend her remaining time with Qin Yun Sheng in a home of their own. So, the two of them sought the help of designer Su Ying to create a "Glass House" for them. This "Glass House" became a witness to the love between Mi Su and Qin Yun Sheng.
Mi Bai --- Chen Yao
The twin sister, Mi Bai, has a lively and cheerful personality. When it comes to pursuing someone she likes, she is willing to go to great lengths. Even when faced with obstacles along the way, she can reveal a cunning side.
Su Ying --- Zhong Chu Xi
She is a designer who possesses both talent and beauty, with a unique sense of aesthetics and creativity. However, her love life has always been challenging. She once deeply loved a man, only to be betrayed by him in the end. Since then, she lost her faith in love and focused solely on her career. It was not until she met Qin Yunsheng that she regained the courage and hope to love again.
Qin Yun Sheng --- Zhang Yun Long
Du Hui Xuan --- Li Xi Rui
Freelancer, Su Ying's best friend, both salty and sweet. Her goal is to take a humble approach to pursue the "marriageable" path, treating relationships as a career, but she has never received recognition and respect. After seeing through Kang Zhaoliang's indifference and selfishness, she decisively breaks up with him. She and Ming Shi initially focus on the physical aspect of their relationship but she knows that Ming Shi has secretly loved Su Ying for years and doesn't want to disrupt the situation. Unexpectedly, in order to prove his sincerity, Ming Shi decisively leaves Su Ying's studio, restoring her confidence in love.
Xu Ming Shi --- Liu Yu Hang
Su Ying's assistant, a high-quality loyal and devoted young man. He is attentive, sensitive, well-built, and emotionally intelligent. He is a strong ally in Su Ying's career, taking care of everything from organizing work to managing staff, providing Su Ying with comprehensive career support and a sense of security 24/7. He likes Su Ying but chooses to silently accompany and protect her, fearing that their relationship might deteriorate if he were to confess his feelings and risk losing her.
Yang Zheng Wen --- Zhang Tao
Tian Di Building Materials General Manager, Su Ying's ex-boyfriend. Six years ago, he betrayed Su Ying for the sake of his own future and chose to break up. Six years later, he achieved success in his career and became the General Manager of Tian Di Building Materials. He reconnects with Su Ying and decides to win her back, even though he discovers that she is already with Qin Yunsheng. He continues to scheme and undermine their relationship, becoming Qin Yunsheng's most difficult rival to handle.
Mi Bai & Mi Su --- Chen Yao
Qin Yunsheng's deceased childhood sweetheart, who appeared gentle and pitiable on the surface but was actually full of schemes. Diagnosed with congenital heart disease from a young age and faced with an early countdown to death, she became mentally imbalanced. Gradually, she developed an almost twisted possessiveness towards her lover, Qin Yunsheng, and even six years ago, she deluded herself into imagining a romantic relationship between Su Ying and Qin Yunsheng. In order to forever live on in her lover's memory, she orchestrated her own death under Qin Yunsheng's surgical knife.
