This track is off of Oki's album "Tonkori."
The Tonkori is a 5-stringed instrument native to the Ainu, which is an indigenous tribe of Japan.
Most of the modern Ainu population live in Hokkaido now.

This song is supposed to represent an argument between two men.
It is one of my favourite tracks on the album.

I do not own this song. It is a property of Oki. If you like it, do check out the rest of this album.
http://www.amazon.co.jp/%E3%83%88%E3%...

The pictures are stuff I grabbed off of Google image search.