**SPOILER WARNING***
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So by this point, we can kinda figure out that Cosette isnt the dads real daughter. When his first wife was kicked out from the family because she couldnt have kids. But in reality, she was pregnant with Cosette. but after she gave birth the baby was dead, but a demon appeared and she made a deal with a demon to get revenge on them, so the demon possesed the body of Cosette. Since Cosette is actually demon and she has mind control/manipulation powers, which is how she was able to get everyone (including the dad) to like her so fast and so much. Her whole goal is to bring chaos and demons into the world, so after Keira was executed, since shes like the "saintess" or smth, ebcause they killed her, the world went to shit and demons came and it was like the end of the world. The dad then realized what had happened and that Cosette is a demon and Keira really was his daughter, so he made a deal with another demon to turn back time that cost him his soul (or a part of it) inorder to save Keira and the world because she has the power of the saintess and is the only one who can stop the demons and everything.
Wait so technically cosette is his daughter....? I know its a demon in the body but the body is technically related to him isn't it? Tbh this doesn't make me like or pity the Duke at all. At the end of the day he was still a douchebag father that didn't give a damn about his daughter cuz idk maybe cuz he didn't really love Keira's mother either. It seems like his marriage to Keira's mom was forced cuz I haven't seen him have any fond memories of her, heck he didn't even really show Keira's mom any respect. Remember when the maid and cosette basically insult Keira's mom , insinuating she was some random "whore" and keira was the result of a temptress and when Keira explains this to him this mother fucker said, then I guess we'll see if they're right. Like damn really showing ur true colors there
Yeah the body is his daughter but the demon inside isn’t. Yeah yorue right I kinda forgot about how he treated her mom my bad. Yeah he does suck ass ngl. I forgot to include this in my explanation but he did love Cosettes mom, but when Keira’s grandfather made him get a divorce bc he’s so “neutral” he didn’t do anything about it and just married Keira’s mom
k i do feel bad for the dad but like he did yk kill his daughter before, but Ik spoilers on why everything happened so i do feel bad for him after knowing but like idk if anyone wants spoilers lmk and ill explain