Ryuu Fujimori

Ryuu, Akira or Daisuke ( or other ) Fujimori.

Also known more simply as 'Azuki'.

He is a kitsune, and while his true name is unknown and kept secret, his 'fox' name is Azuki and his human name varies. Azuki is more or less for friends and those he feels comfortable with, while the more human name is something he uses when involved in human affairs that require proper names.

By default, he is simply an old looking fox. He wears a chi-based human 'avatar' when interacting with humans or in circumstances where it requires it.