The Childhood Sweetheart Who Couldn't Escape

Male lead, Xu Yan: A top student in his second year of computer science, outwardly aloof and chaste, but with an intense possessive streak. The female lead has had him under her thumb since childhood, and he's used to quietly cleaning up her messes.

Female lead, Lin You: The beautiful campus star of the design department, also a second-year student. Cheerful and carefree, she treats Xu Yan as her "best bro" and "personal accessory," and is oblivious when it comes to romance.

A sweet romance built around the "slow-boiling frog" approach. No melodramatic misunderstandings, just the male lead's carefully executed plan to "keep her all to himself." He gradually works his way into every part of her daily life, uses their childhood-friend advantage, and cuts off all her romantic prospects. In the end, he makes her realize that she's already unable to live without him.