Within the mental space where Four-Tails Son Gokū resided, his immense power continued to influence his surroundings despite the seal. The Four-Tails' chakra possessed the power of Lava Release, making the environment as scorching as a volcano. When Kagami Uchiha had been here earlier, he had found it unbearably uncomfortable.
Yet Kazemori Masaki stood before Four-Tails Son Gokū with a calm expression, his body showing no adverse reaction, as though he was perfectly at home in this environment. This was one of the benefits of the sage realm: it reduced the harmful effects of the natural environment to a minimum.
The deeper one's mastery of the sage realm, the more completely one could blend into the environment. Four-Tails Son Gokū had not seen a human with such mastery in a very long time.
Over the past thousand years, the first to attain this realm had been those of the Six Paths lineage. Their sage bodies helped them accommodate and adapt to natural energy. Sage Mode, which took ordinary people ten or even several dozen years to master, was merely a somewhat troublesome exercise for those with sage bodies.
The Sage of Six Paths' grandson, for instance, had been born with the ability to use Sage Mode. But as the bloodline thinned, the advantages of the sage body gradually diminished. Although later descendants could still learn Sage Mode quickly, compared with the first few generations, who had possessed it from birth, they were not only slower to learn but also attained a considerably lower realm.
As far as Four-Tails Son Gokū remembered, after roughly seven generations, Asura's descendants had never again produced anyone whose mastery of the sage realm equaled Kazemori Masaki's. They had lost the innate ability to accommodate natural energy and had to learn the methods before they could