I know and I also understand that he was mourning. His wife just died and he still needed to work as the emperor. And he did do shit. It might be clumsy bec he doesn't know how to treat her bc no one treats him right too. You know that the Emperor was abused by his family too right? But when he saw FL changed, he tried to open up, move on, and learned from his mistakes.
That's why, in MY OPINION, it's more redeemable because he knew he fucked up and actually apologize and changed.
What chapter are you on? You didn't even read. He literally had a sit down and one on one talk with Phil after she ran away and apologize for neglecting her and saying she must live quietly like a dead rat. He also asked his secretary on how can he treat her daughter properly.
Even Phil started to think that she might be wrong and blindly trusted the propecy book a little too much and closed off herself to the people around her.
I don't hate the Emperor, he might suck for 9 years before Philomel changed but I believe it's redeemable and completely understandable if she forgive him and give him a chance. Also iirc, the book isn't a prophecy or the future. It's a fanfic written by the author (which is the Princess) who for some reasons hated Philomel so much so she made the FL suffer in that book.
The child custody between the Emperor and the Magic Tower Master for Phil will be solved if they just kiss each other lmaooo