Artist.
Nickname: イケダ or いけだ (ikeda)
Old name: かすてら (Castella or Kasutera)
https://www.pixiv.net/users/2239804
https://www.pixiv.net/stacc/castera3
https://twitter.com/ikeda_0121
https://twitter.com/intent/user?user_id=3240736387
https://seiga.nicovideo.jp/user/illust/377104
https://www.nicovideo.jp/user/377104
https://sketch.pixiv.net/@castera3
https://ikedata.tumblr.com
https://twitter.com/ikeda0121
http://twitpic.com/photos/ikeda0121