Artist.
Japanese name: おおつの けい (Ootsuno Kei)
Other names: おおつの, こつの
Circle & site name: EGG+
https://www.pixiv.net/users/1832501
https://www.pixiv.net/stacc/kei_val
https://twitter.com/Valac_Kei
https://twitter.com/intent/user?user_id=120707842
https://coloregg.booth.pm
https://sketch.pixiv.net/@kei_val
http://www.tinami.com/profile/84215
https://www.tinami.com/creator/profile/14047
http://tinami.jp/p/84215
http://anycoloregg.blog.fc2.com
http://anycoloregg.web.fc2.com
http://privatter.net/u/Valac_Kei
http://www.toranoana.jp/mailorder/cot/circle/90/67/5730373736373930/4547472b_01.html
http://p.twipple.jp/user/Valac_Kei
http://twitpic.com/photos/Valac_Kei