Shi Fen, a mischievous first-year high school student, balances carefree antics with sporadic responsibility. His playful schemes range from auctioning his younger sister’s possessions to swiping friends’ snacks, yet he surprises peers by flawlessly folding a futon during military training. Their sibling rivalry, fueled by their parents’ divorce, masks mutual care—he disrupts her romantic ventures yet subtly shields her from conflict. Loyal to friends like Zhen Kaixin and Wan Sui, he deploys unconventional tactics to support them, even sacrificing his first kiss in a comedic ploy to rescue Zhen from overzealous fans.

Gluttony drives many of his escapades: swallowing candy to dodge classroom queries, leveraging greasy treats to repel teachers. He bonds with Wan Sui, a wealthy transfer student, by coaxing him into relishing street food and ordinary joys, softening Wan Sui’s aristocratic rigidity. As a mediator, Shi Fen bridges tensions between Wan Sui and his family, aiding the heir in balancing privilege with personal growth. His humor disarms friction, like mistaking Wan Sui’s brother, Wan Xing, for a transformed version of Wan Sui after a bizarre culinary mishap.

Though academically and athletically unambitious, Shi Fen’s basketball team involvement and classroom pranks reflect his relaxed school ethos. His ingenuity thrives in chaos, converting absurd scenarios into survival tactics or unexpected bonds, maintaining a consistent persona of comedic resilience—lazy yet resourceful, impulsive yet slyly protective.