After becoming the white moonlight of my archenemy

Fang Huai is the vicious male supporting character in a romance novel, known for his obsessive yandere behavior toward the female lead, Shen Yuebai, and his lifelong rivalry with Gu Shiyan, the story's second male lead. After being tortured to death by the male lead, Zhou Zhiye, Fang Huai uses a system-provided opportunity to travel back in time. His goal is to ruin Gu Shiyan psychologically by becoming his cherished white moonlight during childhood, then revealing his true identity as his archenemy to crush him. Fang Huai travels to when Gu Shiyan is ten years old, intervening to stop his abusive half-siblings from beating him. To establish a connection, Fang Huai claims to be his future wife, a statement that disgusts the young, homophobically inclined Gu Shiyan but also plants a seed of obsession. Fang Huai protects Gu Shiyan, buys him clothes and food, and gradually earns his trust, with the system tracking his influence at eighty percent. Before leaving, Fang Huai tells Gu Shiyan he is going to buy milk tea and will return soon, a promise that Gu Shiyan waits ten years for. Fang Huai returns to his twenty-four-year-old body in the present timeline, where he and Gu Shiyan are now powerful business rivals in Jiang City. Their interactions are charged with tension and unresolved history. Gu Shiyan, haunted by the memory of his childhood savior, begins searching for him, describing the person with details that match Fang Huai. The conflict escalates when Zhou Zhiye, the male lead, manipulates events to destroy Fang Huai. Zhou Zhiye frames Fang Huai for the disappearance of a male model and orchestrates a hit-and-run attempt on Fang Huai’s life by tampering with his car brakes. During the chase, Gu Shiyan rescues Fang Huai by having him jump from the speeding car into his moving vehicle. Fang Huai is then confined to Gu Shiyan’s villa, where Gu Shiyan reveals his yandere tendencies, locking Fang Huai up out of fear that he will disappear again. Through this confinement, the truth emerges: in the previous life, Gu Shiyan did not kill Fang Huai but was manipulated by Zhou Zhiye into believing Fang Huai was a murderer. Gu Shiyan’s actions were driven by a twisted sense of justice and a desire to keep Fang Huai close, ending in mutual destruction. Fang Huai and Gu Shiyan reconcile, realizing their rivalry was built on misunderstandings engineered by Zhou Zhiye. They work together to expose Zhou Zhiye’s crimes, leading to his arrest. Shen Yuebai, revealed to be complicit in Zhou Zhiye’s schemes, inherits his assets but is left powerless. The system, revealed to be the spirit of Fang Huai’s deceased mother, departs after ensuring his happiness. Fang Huai and Gu Shiyan leave Jiang City for Beicheng, starting a new life together, free from the past and the manipulative forces that once controlled their fates.