Masuzu Aki

Aki Masuzu is from Ehime Prefecture, like prefecture as Iyojima Anzu and Doi Tamako. During the initial Vertex Invasion, she guided them with her Miko abilities in using their Hero powers to protect the evacuating citizens. They took refuge in a school building among other people, where the three got to know one another better.

She is in constant contact with the Shinju but often complains about her duties (such as bathing in the waterfall to purify herself).