For a while, Kyle just tried to deal with the pain.
The pain was definitely not easy to deal with since it was still quite strong, but thanks to his previous experience with the Sin Flames, he could still do stuff.
For people who hadn't experienced Sin Flames, this pain was debilitating.
One had to remember that one also needed to constantly shove Biological Energy into the eleventh Cluster, which required focus.
Trying to focus on something while being under immense pain wasn't easy, which was why so many people treated the 500 years it took to unlock the eleventh Cluster as dead time.
Luckily, Kyle also had a lot of experience when it came to managing his Biological Energy due to the way he trained.
When he had focused on the Law of Body, he had constantly micro-managed his Biological Energy, which was why this wasn't a foreign activity for him.
From time to time, Kyle stopped focusing on unlocking his eleventh Cluster, and it still continued unlocking.
