A ghost?

"*inhale* *exhale*" 

John stared at the sky as he took a deep breath and exhaled it, the breeze was nice and cool and it helped calm his mind. 

Whenever he thought about what happened today with his two party members, he ended up feeling embarrassed and slightly guilty. 

But either way, he was in an expectedly good mood, so much that he could even hear humming. 

[Zestari, stop humming] 

[That's not me] 

When john heard this, he quickly turned his head back to the shoreline. A few meters away from him, he could see a person humming 

They looked to be around 6-foot-tall and had long spiky grey hair, tied in a pony tail. His robe was brown and ragged, and he carried a staff. This staff wasn't normal, in the edge of the staff, where there's supposed to be a magic stone, was instead an Aura. 

It was shining a bright yellow colour and the way it moved was almost like a flame, as if it were alive.