yuutsu
Artist, illustrator.
Japanese name: 優鬱 (Youutu) (reading is a best guess)
See also
* Pixiv account: http://www.pixiv.net/member.php?id=448630
* Tinami account: http://www.tinami.com/creator/profile/8266
* Nico Nico Douga account: http://www.nicovideo.jp/user/4490303
* Nico Nico Seiga images: http://seiga.nicovideo.jp/user/illust/4490303?target=illust_all
* Stickam account: http://www.stickam.jp/profile/youutu
* Twitter account: http://twitter.com/youtoo01
* Twitpic account: http://twitpic.com/photos/youtoo01