Former high school classmate with a mutual crush on Wen Yifan. After a forced rejection and six years apart, he is compelled to share a roof with her. He becomes central to her life when her sleepwalking episodes escalate, leading to intimate confrontations that redefine their relationship.
The central romantic bond driving the narrative, evolving from unspoken childhood affection to committed partnership despite external pressures and internal guilt.
Initially defined by romantic competition and jealousy, the relationship matures into mutual respect after Mu acknowledges the couple's bond.
A grounded friendship built on shared social circles, nostalgic reflection, and collaborative emotional support for their mutual friends.
A brief, tense interaction where Xiang Lang's presence disrupts Sang Yan's personal life, prompting mild defensive friction.
Explore the full interactive character relationship map of The First Frost