Eiko

A shadowy aberration that can shapeshift. Calls herself Eiko and is currently taking the form of Chise.
She claims to be a picky eater, stating that unless very specific conditions are met, she does not eat humans.

She presents herself as cheerful and friendly, but her true nature is meek, with very low self-esteem.
At the same time, she longs to have her existence affirmed and harbors a yearning to find a place for herself in the human world.