The two people with the most power in the Owl Claw dojo are the only two people who have crossed the second major breakthrough obstacle.
The first person is the founder of the Owl Claw dojo, Master Owl Claw. The second person is the future inheritor of the dojo, Master Sky Claw.
It is not that the dojo couldn't produce more than two. This two were intentional and the limit of two was also intention. This arrangement has allowed the Owl Claw dojo to remain stable and in firm control of Master Owl Claw over the years.
Master Owl Claw has had a lot of disciples over the years. Many of them have reached the sixth transformation. But he didn't teach any of them the advanced mana breathing technique.
If he had taught them the breathing technique, many of them would have reached the seventh transformation. Some of the talented ones would have even reached the ninth transformation by now.
But Master Owl Claw didn't teach them. Instead, he taught only his adopted son.
