For several days in a row, Houka arrived at the Sacred Tree early every morning. He would first run through Lightning Release Armor to stimulate the cellular activity in his hands, then sit cross-legged to sense and absorb Natural Energy, refine Sage Art Chakra, and finally merge it into his right eye to replenish his Mangekyou's ocular power.
As wisps of Sage Art Chakra merged into his Mangekyou, Houka discovered that his eyesight was getting better and better. He would soon be able to bid farewell to his thick glasses.
This gave Houka tremendous confidence.
The Mangekyou in his left eye had already lost its light and was completely useless. Houka had considered burying it and erecting a little grave marker with a few lines of epitaph, but in the end, he could not bear to part with it. Besides, he still harbored a faint hope... what if it could somehow be saved?
And with the emergence of Sage Art Chakra, Houka's thoughts became increasingly active.
That day, he removed the left eye he had bought from the Black Market and transplanted the Mangekyou that had lost its light. Then he went to the Sacred Tree to refine Sage Art Chakra.
Perhaps because he was too excited, the refinement process went rather poorly this time. It took more than half an hour before he succeeded. As a result, aside from his hands, which were only slightly stiff from having their cellular activity stimulated by Lightning Release Armor, the rest of his body was coated in a layer of stone flakes.
Houka reached into his crotch again and felt that it was quite a strange sensation.
Afterward, he moved around for most of the day and took a huge piss before finally confirming that his body had completely regained its vitality.