my theory is that it's nothing.. like the kid is making it up/using it as a coping mechanism because they maybe accidentally killed their parents. I'm not completely sure ofc and its been a year since I played but it makes sense
My theory is that its the mind of a kid in a abusive household like the "monster that consumed" their parents is just some kind of drug or somthing and the kid has been lead to beleave its their fault. But thats just a theory (A GAME THEORY!!!)