Artist.
Artist name: "e4" or "eeee"
Circle & site name: "eeeeee" or "e6"
https://www.pixiv.net/users/24067343
https://www.pixiv.net/stacc/eeee
https://www.pixiv.net/stacc/user_wgkc4757
https://seiga.nicovideo.jp/user/illust/772179
https://www.nicovideo.jp/user/772179
https://nijie.info/members.php?id=40585
https://sketch.pixiv.net/@user_wgkc4757
https://www.tinami.com/creator/profile/43932
http://e6-e4.hp.infoseek.co.jp
https://www.pixiv.net/users/17586
