[Fukami blinks— He almost expected for that question to come sooner than this. Well, it isn't as though it's a secret, and he gestures idly with one of his tentacles that didn't suffer any injury. Another moves to take the offered plastic bin from her, and a third goes to begin to pick up things off of the floor.]

I am a familiar. I was born as an octopus and still am, but when I met the sea witch Wadanohara, she took me as her familiar, along with others. She gave us a little of her power, though I can't perform the magic she does.

[Inb4 canon screws me over and tells me that he can.]

...Wadanohara is the one witch of our sea. She protects all of us who live there.