This isn't Marisa. ZUN said so in his comments for this picture. He said he noticed that it looks like Marisa cosplaying as Reimu.

So... who is she?
dun dun duuunn~

Hakusame Marimu.

http://en.touhouwiki.net/wiki/Dolls_in_Pseudo_Paradise/Story

"Well, anyway, it's already too late ... Seems like I saw a shrine maiden at some point. Was I just imagining it?
Or was her hair really that blonde?"

ZUN's comment:

I was thinking about making a new character and
turned out this mysterious blonde shrine maiden.
She looks like Marisa cosplaying as one. (lol)
It's done in a more classical style.

"Hmm, there are still a lot of primary colors, so I should try to layer them some more..."
I seemed to fall into this mindset while drawing this. (^^;;

this image has the "Angel records" logo in the background.
it is clearer if the image is filtered
https://cdn.discordapp.com/attachments/855982572142985226/947880917928652860/unknown.png

I don't know if there is a tag for that kind of thing.
remember, this character is NOT rin satsuki or kirisame marisa, it is a totally different character.