(Y/n) (L/n) is a student in the Music Department of Seiso Academy. She plays the violin and piano, and is best friends with Shimizu Keiichi. Even though she has known Len for a while, they haven't gotten any further than 'friends'. Will Hino break apart their everlasting 'friendship' and steal his heart? Or will (Y/n) finally win him over? *Edited book