This tag is currently connected to two accounts. Probably they are the same person.
 
* Nickname: さしす (Sashisu)
** Old name: あいう (Aiu)
** Pixiv account (deleted): http://www.pixiv.net/member.php?id=3420417
** Pixiv username: xxssww
** Pixiv image server URL: http://i1.pixiv.net/img83/img/xxssww/

* Nickname: senka
** Pixiv account (deleted): http://www.pixiv.net/member.php?id=789969
** Pixiv username: xxssww
** Pixiv image server URL: http://img30.pixiv.net/img/xxssww/

sashisu