Jeo Soo-ri

Chu Sang U, a strict computer science student, clashes with design major Jang Jae Yeong after removing his name from a project, leading to unexpected sparks.

An uptight student must work with the hotshot designer he wronged during an earlier school project. But past conflict soon gives way to romantic tension.

Choo Sang-woo, a Computer Science major, is a stickler for principles and the embodiment of rule compliance. The encounter between two individuals, one with a mind for engineering and the other for the arts, whose personalities don’t overlap in the slightest, continues relentlessly – whether by coincidence or fate. And somehow, despite everything, they are creating a mobile game together?! The bright red semantic error, Jang Jae-young, shakes Sang-woo's perfect world! Will he be able to debug this error?