It’s because he knows the secret of House Taran, that being: INCEST. Additionally, he knows how to make women who aren’t of the bloodline give birth to daughters (with the Mugwort method) in order for the daughters to then marry their Half-brothers (half brothers because only sons can be born of two Taran parents). Otherwise, regular women wouldn’t be able to bear a child with the blood of house Taran because like the story said, they’re not actually entirely human. They have the ability to use magic- unlike other humans- and so they can’t have magic-using children with regular humans. This is why house Taran has been a noble house since ancient times.
He's obsessed with the Taran Bloodline. For it, he doesn't care about anything. He's a disgusting man.
He is a remarkable doctor but he is very disgusting and creepy because of his obsession with the Taran Bloodline
To put it simply, he knows the Taran incest method of preserving their bloodline and not only did he fully support it he's obsessed with it to the point he kept on forcing the duke who is disgusted of his bloodline
Like everyone said he's obsessed with the bloodline and will do everything just to make sure that their bloodline will continue no matter what it takes. He's also sort of looking at the Taran as the "God"
Some one pls tell me why Philip is bad like what did he do?