This looks like a great children's book:

"The King of Nothing just so happens to preside over a kingdom of which nothing is known, other than that he is the king! Mimo the First parades through his kingdom, and he oversees his kingdom, and he sets out to defend his kingdom—especially when, one day, out of the blue, the last thing he would ever have expected or wanted shows up within its borders: something."

https://www.nyrb.com/collections/the-new-york-review-childrens-collection/products/the-king-of-nothing https://counter.social/media/wZh6S2gULuvK3ZEhC_Y