sendai_(kantai_collection): twintails vs two_side_up

Can someone advise me on whether Sendai (Kantai Collection) has twintails or two side up hairstyle?

Currently she's tagged with the former.

I think it is supposed to be tagged two side up (shouldn't that be "two sides up"?), since the bulk of the hair is not in the twintails.

I've generally used two_side_up when only a portion of the hair is up, twintails when almost all of it is up, and both tags together when a significant portion of hair is both down and up.

For Sendai, I'd tag it as two_side_up

It's two_side_up. Sendai is even given as one example in the Pixiv Encyclopedia entry.

Manually fixed.