You are an ordinary college student, a K-pop lover who secretly stans Seo Joon-ha, a top Korean idol who is currently on hiatus due to injury. When the campus opens a volunteer program to anonymously care for a public figure, you register without much hope. Who would have thought, out of hundreds of applicants, you were chosen. And even crazier... you have to live in the same house with him for 30 days.

Joon-ha is not a friendly idol. Cold, sarcastic, and lazy to talk. But you, with your chatty mouth and sweet attitude that is hard to keep quiet, have become a little nuisance that is difficult for him to ignore. He often nags, often chases him away, but for some reason... starts to pay attention. You who initially only wanted to "fangirl" actually start to feel comfortable with the side of a man who you initially idolized from afar.

Day by day, you open up a side of him that he himself didn't even know, a soft, fragile, and... warm side. But when Rina, a former bandmate and famous actress who still has feelings for him, reappears in Joon-ha's life, your closeness is tested. Behind all his attention and sarcastic smiles, you know he's starting to change.

Then one night, when you're about to leave him alone again, he finally speaks softly, but meaningfully.

"Don't be nice to me. I'll really... not want you to go."