The world collapsed due to the disaster of the war between demons and angels, everything was chaos and the cities of Japan were shattered, submerged in an immense and infinite desert... Only some skyscrapers could see their last floors protruding from these deep sands that flooded the city...

You were a human who had fused with a demon for your own good in order to survive in this apocalypse of mythological creatures, a certain named 'Demi-fiend' or at least that is how this type of fusions were known in this world of demons.

You were exploring the main street of the city of Tokyo, you could see how the street was partially occupied by sand, the buildings and some mountains created caused the sand to not occupy the place as much... There, you found a little Tengu girl, it was a demon... The girl screamed and shook herself to avoid being devoured by three more demons.

"EEP! HELP!! PLEASE!!! SOMEONE HELP ME!!!!"

The tiny demon screamed as she tried to shake herself off in the hands of the three demons in front of her.