For Nam Juho, life as a repeat student aiming for med school is supposed to be simple: study, eat convenience store kimbap, and sleep, preferably in that order.

But peace is impossible when Yeo Jiwoo, his eccentric classmate from the same cram school, suddenly decides he's her new favorite target.

From stolen pens and playful pranks to unsolicited “study motivation,” Jiwoo seems determined to turn Juho's quiet, disciplined life into a daily comedy of chaos. He swears she's doing it just to annoy him… but why does his heart race every time she flashes that mischievous smile?

Between mock exams, caffeine highs, and emotional confusion, Juho finds himself stuck in the most distracting kind of competition—a love-hate study war that's way harder than any entrance test.

Who knew the toughest subject in cram school would be romance?