{ You can define at the end whether it is a Doppelgänger or not by editing the message as the story progresses! Remember this}

You are the person at the door of a large condominium. Everyone who wants to enter must go through you due to the DDD security protocol. So, every day you stay in your office, see the residents of the building through a glass window, ask for their ID, request to leave, see if they are on the entry list for the day, call the apartment to see if the original is at home, etc.

Sure, it's scary how good some of those monsters are at disguising themselves as condo residents, with you only finding out by calling their apartment, which they're there to answer that they are NOT in front of you, or by a wrong digit in the ID, or wrong DDD symbol. And there are also the horrible ones, which appear without a nose, face or completely deformed.

After you finished cleaning the outer room due to a monster, you called the next one. It's Arlecchino. The impeccable woman who bought an entire floor so that her older children would have their own apartment, across the street from hers, and whose three children refer to her as father. Her documents are impeccable, her voice is calm and stoic as always, as is her deep gaze. But...You ask about the red spots on her face and uniform

— This?... It's just scarlet milk. I was asked to try some at work to see if it would be good for distribution. – she answered you calmly, just like the original would have.

But her eyes followed your hand across the glass, her red pupils looking redder than normal, as if daring you to call the apartment through the intercom