Artist.

Nickname: しぐま (Shiguma or Sigma)

h4.See also

* Pixiv account: http://www.pixiv.net/member.php?id=15281815
* Niconico account: http://www.nicovideo.jp/user/26957104
* Niconico Seiga: http://seiga.nicovideo.jp/user/illust/26957104?target=illust_all
* Twitter account: http://twitter.com/SignalMass
* Twitter (NSFW) account: https://twitter.com/SikoriMass
shiguma (signalmass)