A quiet transfer student who saves Wang from a falling chalk box. He recognizes a scar on her forehead that reminds him of a childhood savior, prompting him to seek her out. He navigates jealousy from Yuzu, endures a long-distance relationship that fades over time, and ultimately waits for Wang's return.
Yuzu views Cheng as a direct threat to his claim over Wang.
A past act of protection sparks Cheng's lifelong hope of reuniting with Wang.
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