Futaba channel artist.
Futaba nickname: アナルあき (Anal-aki)
Pixiv nicknames: NULL or ぬるり
Often posts filenames of images hosted here: http://www.nijibox5.com/futabafiles/kobin/index.html.
NP (edage no hazama) was possibly an alternate account.
https://twitter.com/anal_aki
https://twitter.com/intent/user?user_id=209650377
https://fantia.jp/fanclubs/6939
https://nijie.info/members.php?id=2413
https://www.pixiv.net/users/2239677
https://www.pixiv.net/stacc/nyanpyoun
http://p.twipple.jp/user/anal_aki
http://twitpic.com/photos/anal_aki
http://yfrog.com/user/anal_aki/photos