Astraeus is the youngest of the Granvilles. Unlike his older brother, he is playful and energetic. Even though he is like that, he's loyal whenever he falls in love. He loves to play the flute and violin. He has an older brother named Aurelius. Astraeus is also sociable and talkative. He is nice and warm-hearted towards other people. Just like his brother, he's respectful and soft-spoken to his fellow royals.