Artist.
Nickname: スポン (Supon or Spon)
https://www.pixiv.net/users/37425
https://www.pixiv.net/stacc/umiwata071122
https://twitter.com/spon_
https://twitter.com/intent/user?user_id=213063868
https://sketch.pixiv.net/@umiwata071122
https://skeb.jp/@spon_
http://www110.sakura.ne.jp/~kaimen/purplebonus/
http://twitpic.com/photos/spon_
