Looks like it will be Reimu, Marisa, and Youmu.
It looks like it has an assistant system, it lists Wolf, eagle and Otter Goasts. Wolf could be Momiji but the other two can't be any known character so maybe it's not characters that help you.
She looks sort of Otter-ish, maybe. She could be an otter.
>>31117>If a human attempts to speak to one, they will answer "oraya" and then answer "araya," and if anybody asks them anything, they say cryptic things like "kawai."
I wonder how many of them there are on Nen.
Not an Otter, apparently she is a still born child/God. A bit morbid...