They’re alright

I would say the father who silently watched her isolate herself without saying a word for 10 years or so, fully noticing her changes in behavior, is worse than the one who fixed his attitude after spending 5 minutes with her

I mean Lenguin kinda ignored her as well he never once tried looking for her after Katherine gave birth to Phil. He knew she was out there but never once looked for her... He also didn't treat his 3 sons well at all. I love Lenguin but he is not the better parent option at all, he can't even connect to Phil emotionally per Lexion's words. Both Lenguin and Eustis have their faults but they both love Phil at the end of the day. Personally I think Eustis redeemed himself far more than most father-daughter Manhwas. Most dad's in those manhwas kill their daughters in the original story but that wasn't the case with Eustis. If anything he apologized to Phil for not being there for her when she was young and needed him and took the blame of her ending up as she did because of him in the original. I personally like both Eustis and Lenguin and think she should keep both and have as much love as possible from her two dads!

He is connecting with her pretty well, for someone who doesn't feel emotions

Eustis did kill Phil in the novel, either on will
or under spell. And he did ignore the first 10 years of Phil’s childhood and only starts to bond with her because of Phil’s effort.
And I think Lenguin did not know Phil’s existence, he was mad at Katherine about this and he mentioned this to her at the tower

No Eustis didn't kill Phil in the ORIGINAL novel. He killed her in the fake Ellensia's fanfiction. It's the whole reason the reason the fake Ellensia wrote the fanfic, because she was mad Phil didn't die in the original and that Ellensia and Eustis forgave Phil for her evil deeds and Eustis even apologized to her for his neglect. We saw that when Phil hit the fake Ellensia with the crystal ball thingy.

He was intentionally having children no? And he never made an effort to look for her or confirm anything, why would katherine tell him if it was obvious he wouldn’t d care especially seeing how he treats his sons

Thissss! I love Lenguin but he was not the best dad and his children all treat him like a child more than anything

not saying he is a better father. Just correcting the previous post saying Lenguin not looking for Phil after the birth. Because from his and Katherine’s conversation, he probably thought the experiment failed.