This tag is linked to three missing artists. Not sure they're the same person.

• Nicknames: 七岡, ななおか (Nanaoka), ７岡 (7oka), な (Na) or "nanao"
• Pixiv account (deleted): http://www.pixiv.net/member.php?id=4705878
• Pixiv server: img109
• Twitter account (deleted): http://twitter.com/smnaok
• Old twitter account (deleted): http://twitter.com/ginanaon
• Nickname: メロンたべたい (Melon Tabetai)
• Pixiv account (deleted): http://www.pixiv.net/member.php?id=4575854
• Pixiv server: unknown
• Nicknames: しげ (Shige) or 飴 (Ame)
• Pixiv account (deleted): http://www.pixiv.net/member.php?id=2883209