Youkai Gurentai
Summary
One day, at the base of Mt. Fuji, appeared a "castle" pouring out Youkai. To curb the labour shortage caused by a declining population, the government decided to integrate the Youkai into society; however, this led to rising conflicts between Humans and Youkai.
In response, the JSDF, with aims to expand their influence in public security, secretly forms a Youkai penal tactical response force, "Tachikawa Task Force", to execute "tactical solutions" for the various issues born from this new society.
He knows that his violin skills are mediocre. That's why he's taking it out on the MC, patheticI bet he's the type that thinks that an expensive instrument makes the best sounding music, while it's true that it does but the main thing that supports it makes those good melodies is the violinist 
