Artist.
Japanese name: うみんちゅ (Uminchu)
Old name: ゆぷ (Yupu)
https://www.pixiv.net/users/3448460
https://www.pixiv.net/users/14745979
https://www.pixiv.net/stacc/gothicpink-slaveholder-grace
https://www.pixiv.net/stacc/sskbbcmng
https://twitter.com/cry_out00
https://twitter.com/intent/user?user_id=3230191519
https://sketch.pixiv.net/@gothicpink-slaveholder-grace
https://sketch.pixiv.net/@sskbbcmng
http://privatter.net/u/cry_out00