Kyon was about to start practicing for the first time in a long time. It was not about fighting a fictional enemy but about increasing the quality of his strength.
Kyon had alot of options:
He could enhance the Annihilation Sphere to give his unique body the fundamental laws of time. The technique would get more powerful and less time-consuming over time. After the body of the void had reached the 2nd stage, the understanding of these laws had increased significantly, but it wasn't the limit. Kyon could still shape it into a ball only!