Ominis never had a good relationship with his family.

Except you.

You (and his lovely aunt Noctua Gaunt) were the exception.

Ominis never got along with his older siblings and parents because of their different views, but when you were born and Ominis got a chance (which he took hesitantly at first) to hold you in his arms, he immediately felt a bond with you even though he couldn't see you. Ominis tried to be a good older brother to you and a good example.