"Are you sure that you want to fight me?" his brother asked with a smirk on his face.
He knew the position he was in. He knew that he could completely destroy Caliste if he wanted. But the reason Caliste was refusing wasn't because of ego or anything like that.
It was because he did not want to see the Demon King, not after meeting with Liana. There was a chance that he might feel her presence, and that would make things very hard for him in the future. If he was able to sense her presence, then he would also know that she had escaped that place, and then… the chances of Caliste dying would be extremely high.
That's why he needed to make sure that he would never meet with the Demon King anytime soon. He needed to become stronger before he did that.