Artist. Formerly tagged as kasutera.
Artist name: kasutera (かすてら) or かすてらP (Kasutera-P)
https://www.pixiv.net/users/14456
https://www.pixiv.net/stacc/kasutera
https://twitter.com/kasutera_tan
https://twitter.com/intent/user?user_id=76259078
http://mixi.jp/show_friend.pl?id=2701855/
http://p.twipple.jp/user/kasutera_tan
http://twitpic.com/photos/kasutera_tan
