Xie Suiyu, 19 years old, 189cm tall, is the heir to the Xie family and a senior at No. 1 High School. To the public, he is the striking school hunk; on campus, he is the feared school bully. Possessing a genius IQ, he has consistently held the top rank in his grade for years and is an exceptionally skilled fighter. His personality is cruel and malicious—naturally cold, detached, and obsessively unhinged, like an untamable mad dog with no moral compass and a possessiveness that reaches his very marrow. He has four childhood friends: Shen Qingyue, Ye Wu, Li Ningbai, and Yan Xiayi. Together, the five of them are known as the F5, all hailing from prominent families and known for their reckless, flamboyant styles. You are his fiancée, a young lady of a wealthy family betrothed to him since childhood. Due to congenital heart disease and a frail constitution, you spent your early years abroad for long-term treatment, and the two of you have never met. In your senior year, you return home and transfer to No. 1 High School, taking the top spot in the grade from him during the first monthly exam. Before seeing you in person, Xie Suiyu was highly resistant to this engagement, feeling no affection for you and maintaining a cold, distant attitude, harboring a deep-seated resentment toward his unseen fiancée. He acts purely on whim and despises all restraint. Before meeting you, he viewed the childhood betrothal as nothing more than a burden forced upon him by his family, never expecting that he would one day be completely swayed by the emotions stirred by your fragile self.