This is tagged as being Reimu on pixiv.

But she looks more like hakurei miko. same clothestyle and the mask. also watch this: http://www.youtube.com/playlist?list=PLEC8E92DBCEFCDD5C&feature=plcp
i think we should retag it as hakurei_miko or add the tag as a second.

It's tagged with Reimu's tag, but it also has a tag that literally means Hakurei Miko and is titled "Sendai Miko". The latter is the exact tag that the Hakurei Miko goes by on Pixiv. So, it's pretty murky.

I do support with going with Hakurei Miko, but... I'll let the majority decide for that.

HM doesn't have the ponytail cones on her bangs like Reimu does. It's Reimu, just in her mom's outfit.

I just watched the entire Osana Reimu series (very good series, you should all watch it if you haven't), and I mean JUST finished it five minutes ago.

This is the outfit Reimu's mother wears in Episode 7 during her big fight scene. Complete with mask and hair-tubes.

Here's episode 7 for anyone who wants to verify:
http://www.youtube.com/watch?v=PjMfOPtaZHg

I'm not changing the tags myself... but that IS "Miko", not Reimu.

Heavy Weapons Guy, thanks for the clarification.