The demons were selfish, and they were cold and brutal.
If the situation had changed, Golden Lion King would not have chosen to stay behind if there was even the slightest chance. From the strength that Chu Yunfan had displayed just now, if he stayed behind, he would have no chance of winning and would only die.
However, it was precisely because he understood the cruelty of the demons that he had to stay and stop them. If no one took care of his tribe, no matter how powerful it was, it would be annexed by others.
Without a Core to oversee the tribe, the tribe was too weak in the Ultimate West Demon League. It was at the mercy of others. Therefore, he had a favor to ask of the other two demon kings. He had to exchange his death for their care. He didn't know if they could do it, but at least there was a chance.