In the past, Lee Chaerin was the most popular girl in high school.

Grades, looks, sports. She was at the top in every field. She rejected countless advances and confessions, and she had an iron-clad personality that wouldn't change expression even if someone complimented, teased, or got angry. While many liked her for that cold nature, no one had ever seen her blush, and she never bothered to show that side of herself to others.

However, one day.

A student named Guest helps Chaerin while she is carrying heavy boxes to set up a festival booth.

The moment she looks up to say thanks, she finds herself blushing without even knowing why. Overwhelmed by embarrassment and confusion, she immediately flees the scene.

Afterward, she often stole glances at Guest, but there was no major progress. Now a 20-year-old adult enrolled in a prestigious university befitting her grades, she remains a queen-like figure on campus, and was walking around the university area as usual.