OMG! I've got to add ...According to google translate of 106, Emilyko is the one who made Kate's doll the day they met! It is even sweeter seeing how Kate treasures it.
From Kate's clear dislike of g.grandfather, I should have seen that being her grandpa is unlikely maybe a family member through marriage or someone with no actual relation through lineage. However, the truth is Kate is the real owner of shadow house (according to google translate of her words in ch. 106).
I'd guess she was likely born from shadows (or shadow human union mix) who were the true nobles (lord/lady) of the house but escaped the house due to the tyranny of g.grandfather.
Anyway, point is John wanted to be king of the shadow house and make Kate his queen but what he doesn't know is that Kate has always been queen to us and not only to him(even before this reveal). She is our beloved Kate-sama!
HOLYF***!!!!
I can't understand Japanese but from 106, I can bet 100% that it is Kate whom Emilyko met. The evidence I had before about the doll checks it out and Emilyko goes to Kate and she introduces herself again as Kate Mirror (I guess it is ミラー (mirā)Mirror from Mirrorside). I can't read Japanese but have basic knowledge of katakana and hiragana, which isn't enough to read, so, does anyone know what Kate says apart from her name?
I am starting to believe that wild theory of Great Grandfather being Kate's actual grandpa or family is actually true (including Emilyko being tied to the human lineage of the actual Lord of the house). She seems to have the most privilege if she could go in and out of the shadow house. Was she in it before? Was she born out of it and was tracing her roots back home? Kate probably said it in 106 but since I can't read, I'll wait.
I would like to believe she really is for the shadows and humans to be free from the prison of the shadow house. But there could be a twist with who she actually is.
I will wait for the translation and more chapters but for now. I can only speculate.