Kitsune

I got this wonderful mask from my bro R aka Renfrebar.
It is the mask of Kitsune.
"Japanese folklore actually knows two types of kitsune: the Zen kitsune or Zenkō (善狐; "Good Fox"), who is kind to humans, and the Nōkitsune (野狐; "Angry Fox"), who despises humans and harms them want. Apparently there is no such thing as a “gray scale”. Gender doesn't play a role. While the Zenkō are always given a tragic role in legends and traditions, the Nōkitsune are portrayed as fundamentally evil. It doesn't seem to matter at all whether they were driven to do evil or whether they took the initiative on their own - they are evil "because they can." Whether they are kami, yōkai, or mere bōrei also seems to be completely irrelevant. If they are well disposed towards people, it means happiness, blessing and prosperity for the latter. If they are evil, it means misfortune and suffering." *German Wikipedia
It is popular in Japan plays
Geisha Kitsune Dance

This fox mask appears also as mask of the Anbus in the series of Naruto. 

It was a good day with my brothers :-D