This is a problem.

I got the idea from the comment section of the oneshot "Problem" in @FallenAsleepYetAgain 's Nightmare x Blue Oneshots book.
Picture's by A lone artist and writer on Tumblr
Nightmare is all powerful. An absolute beacon of fear and despair throughout the multiverse. His name is spoken only in terrified whispers, or sometimes not even spoken at all. Those who become his prisoners rarely leave the castle in one piece, if ever.
So it's as much a surprise to him as to anyone else when he begins to wonder what it would be like to be subservient to one particular prisoner of his...
!!This book contains NM being an absolute SIMP!!