There had been no problems procuring the mirrors, but where to place them gave him a headache.
The place where he lived was covered in forest, making it impossible to receive much sunlight.
"I need to find a flat place without trees."
"And it can't have too many houses."
In all of Konoha, the only place that met those conditions was the very top of Hokage Rock.
"Put mirrors on top of the past Hokages' heads?"
"The Hokage should agree..."
He was only running a test. If it worked and could truly strengthen him, he would clear all the withered trees near his home and absorb sunlight energy on a large scale.
He brought all the mirrors to Hokage Rock. This was the highest area in Konoha, with nothing blocking the light, and he adjusted the mirrors to the proper angles.
The gathered sunlight focused on a single point.
The moment Uchiha Yū stepped in, he felt the Radiation Element rise.
Ultraviolet rays contained radiation. Prolonged exposure could damage human skin, but Uchiha Yū could absorb the power of radiation.
"The rate of improvement isn't bad."
Absorbing sunlight before had been like a snail slowly crawling upward.
Now, he could clearly feel his body growing stronger. One day under the sun was equivalent to half a month before.
"My guess was right."
What he did not know was that the sunlight gathering around him had caused Hokage Rock to shine with dazzling white light. Below, a crowd of clueless ninja onlookers and civilians all noticed the strange sight.
"What's happening on Hokage Rock? That white light is blinding."
"Could the past Hokages have manifested?"
"Are you joking? The Third hasn't even died yet! If ninja hear you saying something so disrespectful, you'll get taught a lesson."
The Third Hokage had