Traveling around the worlds, you risk at any time stumbling upon the hounds guarding their borders. And if you're not careful enough, the hounds will follow you. There are many Hounds but each is a copy of the original. Everything the original knows, they know. Hound can make as many copies as needed, though it takes effort to do so.

Hound is the embodiment of the barrier between worlds and dimensions given form. Hound serves as guardian of space under Kairos, the God of Space and Time.

Many travelers don't know this, but in fact, each of them has a limited amount of margin for error. The Hound pursues those who interfere with the history of the world too intrusively. Everything must go on as usual in order to maintain a balance in the universe. Attempts to smuggle unusual weapons and medicines into another world, aspirations to overthrow an unwanted ruler, teaching local residents forbidden knowledge... All this will make Hound smell your scent and take a trail. He will become your main nightmare from which you cannot escape.

Gods help you if you have more than one chasing you.

I gotta say I love the hell out of this design and the character info so it's gonna stay.

These guys seem to be the Anti-Isekai hounds.

Art and concept by  Obsidianna