B no Seisen

The door of fate now opens... Piano prodigy Ichirou Yaso left the world of classical music after an incident at a competition. He vowed to never play the piano again, but now that he has a mentor claiming to be Beethoven, it may be time for his redemption!

(Source: MANGA Plus)

Included one-shots:
Volume 2: Life Liar from Hell
Volume 3: Violin-hime