I'm not quite sure if the girl between Shirayuki and Shimakaze is Kasumi or someone else.

Could be Akebono from the look of the hair. Not so sure.

The little hair tie looks like Ayanami's

Gollgagh said:

The little hair tie looks like Ayanami's

Yup Ayanami. Tagging.

Ah, it's THAT stash...

damn these girls are sharp