With the coming of Samhain, the border between the living and the spiritual unknown splits up, bringing ancient mysteries into our world.
When the time comes, it is not only the balance between the past and the future that is unstable in Tokyo; six adventurers in feline forms are drawn together by a seemingly inexplicable shared secret from a past they cannot remember. Only under the moonlight can they take on human form, from sunset to dawn — but is it really just a twist of fate that each of them possesses strange powers, too?
However, two things are certain: the loss of their memories is tied to the presence of their abilities, and that nothing is what it seems. After all, they are not the only ones who are able to wander as they please; watchful eyes are always on them.
Will our adventurers be able to see behind things, seek the knowledge of the past — and thus who they really are — before time runs out?