Magistrate Simon Cordier is a failed host, failure to develop real force of that organism.
It use human's split personality ability to set up a "Multiple Personality no disorder" , let former hosts appear at the same time in mind. But in Simon's case, it failed, no former host waked up, but himself splited out a new personality, blending the dark side of mankind and that organism‘s strong desire to survive. He fought against himself, died in a fire.
"But Simon did created an object, his diary. Many years after, I received it, read it, waked up his incomplete spirit from the remnants of fragments. There is also a name, Horla."
It is a wallpaper, what if Simon Cordier successfully formed Horla.
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