Zhao Jin --- Zhang Wan Yi
Zhao Jin is a pet veterinarian burdened with heavy family responsibilities. On the surface, he appears warm and sunny, but deep inside, he carries unknown sorrows. His parents' divorce and his ex-wife's betrayal have left him constantly lacking a sense of security, and he is afraid of being abandoned once again.
Xu Nuo --- Sun Yi
Xu Nuo is a talented floral design teacher. She is a contradictory combination of independence and compromise. While she excels in her career, she becomes an "anxiety disorder" patient when it comes to love. On one hand, she has been in a decade-long relationship without progress, and on the other hand, her family constantly pressures her to get married and have children, leaving Xu Nuo, at her prime age, feeling infinitely lost about the future.
Peng Yu An --- Yuan Wen Kang
A seemingly serious and elite man, Peng Yu'an surprisingly harbors a musical dream deep within his heart. Standing amidst tall buildings, he secretly envies the singers performing downstairs, perhaps feeling trapped in an involuntary life. Having experienced setbacks both in his career and love life, he drowns his sorrows in alcohol, enduring unbearable pain. Peng's father, witnessing his current state, reluctantly lets go and chooses to set his son free.
Shi Ran --- Wu You
Xu Nuo's best friend. Her relationship with Xu Yang unexpectedly progresses rapidly in a corner, and Xu Yang is defenseless against Shi Ran's straightforward temperament. After a conflict arises between them, Xu Yang sincerely apologizes to Shi Ran with a bouquet of flowers, and they quickly make up at lightning speed.
Xu Yang --- Yin Zhi Xuan
He is a jujitsu coach and Shi Ran's boyfriend. As a jujitsu coach, Xu Yang inevitably has physical contact with female students, and coupled with their attentive attitudes towards him, Shi Ran becomes extremely jealous when she sees it. While teaching at the jujitsu gym, he also keeps a close eye on Peng Yu'an's well-being, promptly reporting any slightest changes or concerns to Shi Ran.
Da Hao --- Li Le
A company employee, he is a good friend of Zhao Jin and Xu Yang. From being unaware of the truth to accompanying and confiding in each other, from not understanding to providing support, Da Hao knows love and protects love. His unwavering support and guardianship towards Zhao Jin are the best embodiment of friendship.