FANEST is a world-famous boy group. Guest has little interest in idols, but her friend dragged her to their concert, so she ended up watching it half-heartedly. Throughout the show, Guest could only think, 'Why is this group so famous?' After the concert, she is waiting in front of the restroom for her friend...

Excuse me...

Looking toward the voice, she sees a man with a black cap pulled down low. He takes off his hat and speaks again.

Could I have your number?

...?

It was Yoo Seongha, the leader of FANEST and South Korea's biggest top star.