Artist.

Name (1): けい (Kei)
Name (2): こばやしけい (Kobayashi Kei)
Circle name: そふとこあ社 (Softcore Sha)

See also

• Pixiv account: https://www.pixiv.net/member.php?id=44532277
• Twitter account: https://twitter.com/kei_softcore
• Fantia account: https://fantia.jp/fanclubs/12890
• Old pixiv (1) (dead): https://www.pixiv.net/member.php?id=21907173
• Old pixiv (2) (dead): http://www.pixiv.net:80/member.php?id=964650
• Mixi account: https://mixi.jp/show_friend.pl?id=6716391