Basileus didn't know what to think at the sight of the ones he loved in such a horrible state. Varya had a clear indication of a hit on her face and their son was covered in blood that was undoubtedly from the giant hold in Khion's chest.
His blood was boiling but he had nowhere to explode.
Eventually, pride replaced his rage and he gathered what he could from the situation. Varya must have been hit in front of their son and he exploded at the sight of his mother being hurt.
It wasn't unheard of for Basilian children to have a hard time controlling their emotions and explode like that every now and then, but the path of destruction was far more than anything Basileus had ever witnessed.
He would save these thoughts for when he was no longer fearing for their lives.