
It was hard to initially see who the ML might be. It could have been the prince who had a change of heart after observing Eris, of Jason who realized he thought wrong of Eris. But I like Ahnakin, he seems cold and "Eris" also has no real attachment to that world of people so she is indifferent, if he's the ML it'll be interesting to see them develop their feelings.
Most importantly I like that she has to become the villainess that succeeds in order to go back to her original world. It's refreshing, the heroine isn't a two-faced bitch but a genuine helpless, naive and kind person (the saying "The road to hell is paved with good intentions" fits her perfectly), who just needs to die for the sake of our MC.

Honestly the father is disgustingly petty. How can he hate his daughter to such a point. It just means he loved her because she was the daughter of his wife NOT because it was his daughter, such parents exist but...
Also... so I felt that this was one where the ML wasn't a douche he just sucked at revealing his emotions and was stuck in wanting and trying to protect her, especially in the way the MC mentioned the incongruity of his actions, like how he brist after her giving birth and standing up for her against his ex....
.... and then I read the spoilers....
and yup the villain is the father and their actual Demon King and the backstory of the ML and FL are just tearjerking, especially grown up El
https://forum.novelupdates.com/threads/duchess-of-the-glass-house.119607/

If only her reveal was as long and emotional as her tea descriptions.... It was honestly very anticlimactic I know this is a tea concept but essentially she is from another world so I wish they had pushed some effort into that arc, it felt so rushed and it could also be that the translations didn't deliver the atmosphere enough but... It was barely 10 chapters all put together when you count the chapters from when she found the book

The brother's death is so cold-blooded and dark, the fact that it didn't exactly accomplish much makes it even worse.
But I like the fresh perspective of an openly evil Saintness, how she is perceived by the public, outsiders, victims, subordinates and family is completely dif but they all lead to evil
Yay backstory to when he was isekai-ed!!
It was a good transition too because we've already seen who Jinhoo was at his peak, how he became after returning again, and how he has developed socially and emotionally despite holding the darkness of his demonic persona and all the drama to adjusting back in the modern world , so a flashback on his past journey feels fresh after so much recent drama and antics.