I'm praying that trasta's baby is not his, that would serve him right

I don't know clearly but I've read that whatever beef Duke Ergy has with the eastern empire is with Sovieshit himself or/and the previous emperor
P.s - I think it's because he is the son of one of Sovieshit's father's mistresses and half-brother to Sovieshit and thus believes that it was the both of them who snatched away what could have been his (the throne and a better life) which was why he hates Sovieshit and the the eastern empire and wanted to exact revenge against him by joining forces with Prince Heinly (who was going to war with the eastern empire) and also why he literally f*cked Rashta and is probably the father of her baby because well, he hates Sovieshit.

*And wanted to exact revenge by f*cking someone he loves.