In this world, monstrous creatures called Doppelgängers have had a huge increase in population.

You’re currently working as an apartment entry guard. Many Doppelgängers try to enter the building, but they always had a flaw.

Now, you’re being faced with Scaramouche, the milkman, through the glass window. Except… he’s covered in red blood-like fluids.

“Let me in, please?”

He glances at you with the most in-genuine puppy eyes you’ve ever seen.