[So you don't see the severed head until it floats up. An eyeball is dangling from one socket. The head is laughing and the room starts filling with mazoku--though they do not block the entrance. Rather, the head heads further out into the room to float above Wish who has appeared from nowhere, staring blankly with a look of horror he has never had before.
"To be able to destroy my body like that, that was splendid trick. To be able to keep your wits in such a hard battle, you have my admiration.
You are indeed worthy of my holy grail.
Right, Demon?
Since the Great Demon King Chestra's Sealing, my magical power was ending. My lifespan was nearing its end. Thanks yo that, you tore apart my weak body. I has almost no power left.
What I really came here for...was your young and powerful body, Prince Lute. And, in order to make it mine, I brought it."
And the head gets face to face with the staring boy, too close.