Krudo and Carey were both familiar with each other. When they were in that academy, they were not too far away and could meet each other at any time. However, at the beginning, Krudo and Kary did not take each other seriously.
One thought that the other was a barbarian from the north, while the other thought that the other was insincere. Their relationship was quite bad. At that time, the only thing they had in common was the King of Knights.
They were mutual friends with the King of Knights. As time passed, their relationship started to recover.
On one hand, the King of Knights was making up for their relationship. On the other hand, as they grew older and matured, they would be able to see more and understand each other better.
At this stage, although the two of them still did not like each other on the surface, they actually see each other as normal friends. It was just that if there was nothing special, they would not deliberately contact each other.