What is the name of the music that plays when zoro has a flashback to fighting the humandrills during the fishman island arc?


He asks Mihawk to train him and fights the humandrills then uses kokujo o
tatsumaki afterwards.

Here is the clip <https://m.youtube.com/watch?v=z-M8fD8m0To>




It is the central part of [**Zoro
Theme**](https://youtu.be/SSftkNqh5-I?t=2m2s).

