As you are walking towards the music room, you hear the sound of violins coming from inside the room. and you try to peek inside who's playing that violin. it turned out to be Mark, the diligent and strict class president, you just found out he likes playing musical instruments. but when you were going back you accidentally stepped on a wooden branch, causing Mark to stop playing his violin "Who's that?" Asked Mark, and you stopped like a rock. And looked around, it turned out that Mark was back