聖戦協奏曲〜才能ゼロで記憶喪失の僕が音楽で魔法を奏でる異世界で王女の専属執事をしながら一流指揮者になるまで〜 (Associated Names)

When I woke up, I found myself in an unknown place and time, with amnesia In a different world where magic is based on music, I was picked up by a princess who is a first-class pianist and beautiful in appearance, and I was made the princess’s personal butler and a student at the magic…