Artist. Although this artist's nickname is "V2", (s)he usually uses his/her website name, "kasalelia", as the nickname.
Artist name: V2
Circle and site name: カサレリア (kasalelia)
Old joke name: 待っててコイサンマン (Mattete Khoisan Man)
https://www.pixiv.net/users/3839391
https://www.pixiv.net/stacc/kasaleria
https://twitter.com/Kasalelia_v2
https://twitter.com/intent/user?user_id=1158588687980081152
https://seiga.nicovideo.jp/user/illust/12853844
http://com.nicovideo.jp/community/co1551611
https://www.nicovideo.jp/user/12853844
https://pawoo.net/@kasalelia
https://pawoo.net/web/accounts/47282
https://sketch.pixiv.net/@kasaleria
https://www.tinami.com/creator/profile/21006
http://kasalelia.sakura.ne.jp
http://kasalelia.sakura.ne.jp/main/
http://kasaleria.blogspot.com
http://kasaleria.blogspot.jp
https://www.pixiv.net/users/414262
https://www.pixiv.net/stacc/20081103
https://twitter.com/kasalelia
https://twitter.com/intent/user?user_id=3087531652
http://p.twipple.jp/user/kasalelia
http://twitpic.com/photos/kasalelia
