"I was beyond crying, I had lost even that."

Man... the writing here is amazing @honeydue. I love the way you describe the beasts, "Because they were incredible beasts, creatures of great beauty, as well as great danger", the way they crawl from his head and are gone and then return, and he seems to have only a general idea of where they've been and what they've done. It's a surreal, not-really-in-his-control superpower, with that delicious kind of ambiguity that makes you want to keep watching it to see how it works and where it goes next.

And then there's the psychological dimension of it... the internal experience, and its reflection in outer reality, are very real to him, but if he were to tell anyone else about it it's unlikely that he would be believed, and possible that he could even be committed, medicated, etcetera.

To me this reads like the beginning of a really fantastic graphic novel. Like the ones Neil Gaiman used to write in the 90's. I could see it continuing from there through all kinds of convolutions in plot. What an interesting and tortured hero/antihero the protagonist makes!