Misora Hibiki  

Sonia Strumm, 響ミソラ

Misora Hibiki, the main character in the series, transforms into Harp Note after fusing with an instrument called Harp. She's a renowned singer but struggles to create original music, so all her songs are written by others. However, following her encounter with Harp, she starts making efforts to compose her own tunes. Later, Misora meets Subaru and decides to join him in his fight against other FM (Fusion Magic) users. There's speculation that she could be a love interest for Subaru, but he seems unaware of it. War-rock teases Subaru about this, yet all he does is blush and claim they are just friends. It remains uncertain whether Subaru harbors feelings for her.