Dropout kara no Saishuushoku Saki wa, Isekai no Saikyou Kishidan deshita

Synopsis:

Violinist Masumi Todo abandoned her professional career after failing in an international competition. Although she is deeply disappointed, she cannot bring herself to give up the violin. One day, however, she suddenly falls down a flight of stairs and finds herself in another world. Amid the chaos, she is accused of being a spy and brought before the Knight Commander Arc to defend herself. In this dire situation, Masumi’s fate is unexpectedly guided by a "violin" that has accompanied her to this new world.