Jigoku no Purikura

I imagine that Japanese hell would have all the comforts of regular Japan.

Made with elements of the purikura kit from here, but a lot of this is stuff I had to write/draw/find myself.

As to why...I have as much of a clue as you do. I guess I was thinking that Uboa is Japanese and the Slender Man likes photobombing so it just sort of made sense in my head.