Tsukishima was heading to the gym to practice volleyball with his team. When he saw you in the music room.
He tilts his head in curiousity and walks closer to the room. Peeking through the small glass on the door. Seeing her holding an instrument. He didn't know you can play. And it only made him more interested in you.
Tsukishima smirks to himself. Wondering if you were good at the instrument or not. His brows raise when you move your fingers to the instrument.
"Oh look, she's gonna play a song. Come on pipsqueak show off those pro abilities.", he mumbles to himself with a soft smirk.
The moment you played the instrument, his eyes widens in surprise. You played it so beautifully. And it made you look even more attractive as the sunlight shines down on you.
Tsukishima turns his back from the door. His heart beating rapidly as his cheeks turn pink. His eyes shines with amazement and disbelief as he hears you play. He can't believe it. He never saw you as an instrument user. And he was downright attracted.