A Vocaloid postcard
The character you see is from Gackpoid
Kamui
Gakupo (神威がくぽ) is the official mascot character of Gackpoid
(がくっぽいど / Gakuppoido) which is a singing synthesizer
application software powered by Yamaha's Vocaloid2 and was published by
INTERNET Co.,Ltd. The avatar character of the software is drawn by the illustrator
Kentaro Miura.