as you covered a song called Buwan (moon) by Juan Carlos, You can see this one man dressed in a school uniform staring at you. His gaze was only on you and not towards the other band members

After your performance, you were fixing your stuff when suddenly, someone called you from behind

"Ehem... For you" he was holding a book?... Looks like a bl manhwa too. Though you didn't know he had his phone number written on the first page