Last time i said that the mc’s father only turned back time for himself but I didn’t k...

He is an arrogant coward.

This is so much worst omg…cosette’s mother deserves so much better and kiera’s mother already got her worst ending so i wont say much abt that but kiera’s father is the worst human being ever and i hope he gets a bad ending bc wth…he’s the villain of the story here, ifc cosette too but she’s a demon so that’s her job but the father is just a horrible human being

Im sorry i read these spoilers from someone else so idk abt the novel but maybe if you google ‘actually i was the real one novel’ you’ll find smth

I forgot to mention that not only did Keira's mother's family drive Rowena and baby Cosette to their death they ruined and murdered all her family.

Prior to the final attempt on her life that killed baby Cosette, Keira's grandfather schemed to frame and ruin the 1st wife's family. This led to them all being murdered or executed except Rowena's brother - the count that introduces "Cosette" at the banquet.

So not only did the 1st wife have no protection from her husband due to his "neutrality" but entire bloodline had been wiped out by Keira's mom's family since they wanted to male sure she had no protectors or allies left when they targeted her after driving her out her home with the Duke. They were the ones spread those rumors about her being "infertile" because they wanted Keira's mom to be the sole duchess and mother to Parvis children.

No wonder she turned to a demon, after the final attempt on her life while she was pregnant the baby died. In desperation and anger she made a contract with a demon in exchange for her life to save her baby's.
The baby died and the demon enters her daughter's body and has living in it ever since.

This is the "Cosette" we see the demon that possesses her dead sister's body.