After a few seconds of this, Klein gave a firm nod.
The look on his face was as if he was reflecting on his mistakes.
It seemed that he finally realized the errors of his way and learned to change because of them.
What Klein realized was that the wyverns were the true trump cards of their Kite Kingdom, so they had to be preserved when they could be. Even if they had to sacrifice other things, it would be best if they could preserve the wyverns.
As for this other trump card, it was not something that was easy to keep after the fight with the undead horde.
So it was better to use this than to sacrifice the lives of the wyverns and the wyvern riders.
After coming to a decision, Klein looked at me with a serious look and said, "Tell us when you're ready, we'll work with you."