If I remember he was not the female hater since birth
And Hestia was very dear sister to him
But his step mother (Hestia's mother) used to sexually harass him
Year by year it really cross his mental state that he kill his step mother
But his brain already beyond to recover that any female remind him his step mother that he keep killing
His own sister face very much remind him his step mother
(He start sex with men to get rid of those memories later he got addicted)
Hestia was also used to love him as brother but when only one who was near him stolen from her (by her mother) and he changed very much later which also effect her mind that she get started jealous other men he had with
When Hestia kill him he wasn't dead but started lossing lots of blood that when he met to kain sister karina he mistaken her to Hestia and suddenly attack but relished later that's not Hestia
I skip middle chap so Idk after it much

Ngl I know the og Ian is worse and cruel but I kind awant to see more of him. I want his story too, i know he is evil asf and he deserves what happend to him, but the entire plot revolves around his identity. All we know is that him and his sister has a bad relationship, is gay, a slitty bottom, rude, like im sooo curious abt his character, wish theyve explored his character more