Alternatively, it could be 小粒あずき ->small_red_beans, which is my browser's translation, but that would probably be less correct, in addition to being inconsistent with how we tag artists that, unlike Shindoru and Yamabuki, use a name that was intended to be spelled in kana.
Either way, I think it clearly needs a tag that is in romanji, not Japanese, characters. Uploads of his/her art would be much more frequent, for one. And, like many of the Pixiv artists uploaded here that I've seen, the gallery is freakin' sweet--most isn't pornographic, but still looks nice-- so somebody should upload all of it nao. Note to self: DO IT FAGGOT