Having completed the reinforcement of the vascular tissues, Matthew turned his attention to modifying the kidneys of the test subject with a different mindset.
The modification process wasn't much different from before—applying simulated reactive pressure to sustain higher operational power first.
Energy was continuously replenished, repairing the damage caused by excessive strain.
Thanks to the supplement of life essence, the kidneys wouldn't shut down or fail under heavy loads. Instead, under the strengthening effect of Matthew's "Mutation Spell," they gradually began to enhance.
Of course, this process would be excruciatingly painful.
Matthew reflected deeply, recalling the "Iron Will" ability he learned from the Abyssal Demon Fish. Suddenly, he realized this ability would be perfect for the Dragon Warriors.
Pain was also a way to temper one's will!
As the kidneys grew increasingly powerful, Matthew, naturally, made some fine adjustments to them.