This mask papercraft is the Ichigo Hollow Mask, based on the game Bleach. The paper model is designed by rexxkentrix. There is another paper craft version of this mask here: Bleach – Ichigo’s Hollow Mask Life Size Papercraft. 

Hollow Ichigo, more properly called The Hollow within Ichigo’s conscience or White Ichigo, is a powerful entity that was created when Ichigo Kurosaki, a Shinigami, developed a Hollow inside his soul, a commonality among the Visored.

You can download this bleach papercraft from here: Bleach – Ichigo Hollow Mask Ver.2 Free Papercraft Download

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