Sirius Vermillion/Relationships

Astrea Vermillion
Sirius cares deeply about his wife just as much as his daughters to where he affectionately refers to her as mama, as well as showing respect for her effectiveness as a politician.

Lunaeyes Vermillion
Sirius cares deeply about his oldest daughter becoming completely enraged and concerned about her condition after Or-Gaule had attacked their allies in Kingdom of Cradleland

Stella Vermillion
Sirius cares deeply about his youngest daughter who he has shown to dote on against more so compared to his oldest daughter and wife, even rushing in to hug her after she returned to the Vermillion Empire after leaving to attend Hagun Academy.

Ikki Kurogane
As a father who dotes on his youngest daughter, Sirius has contempt toward Ikki for "stealing" his daughter from him in Japan to where he sent the Vermillion Army after him once Ikki and Stella had arrived at Vermillion, as well as challenging him to a series of competitions before he could be accepted as Stella's lover. As a warrior, he have respect towards him due to his strength and skills, as well as being able to defeat him in an arm-wrestling match using all his bodies' strength showing his hidden admiration.

Or-Gaule
Sirius has nothing more than contempt towards Or-Gaule due to his actions towards his friends and allies in the Kingdom of Cradleland, as well as using the citizens as puppets.