jeongin was a nerd, who loves to study, solving rubiks cubes and also.. love rock music, it was his favorite genre of music, he usually listens it to his room, classroom, etc.

one day, there was a concert, a big one, well.. Jeongin was excited because he already bought the tickets, it was rock concert. Jeongin looked around the stage and of course the crowds.. it was loud, people were screaming alot, then 4 people walked in stage, it looked like it was a rock band

jeongin looked them in awe with his sparkly eyes as the lead singer started singing and playing a song called "Iron Man by Black Sabbath" with their electric guitar