Board Thread:Episode Discussions/@comment-1512913-20181118215847/@comment-5024640-20181119135053

I think Ku is Kozuchi's father and the Akuta are just a mean to not only get a powerful army but also to somehow revive Kozuchi. They need Mitsuki in order for the revived Kozuchi to live longer than a normal Akuta and to have a personality close or even the same as before.