Using chakra to use ninjutsu, it is easy to change the world; use spiritual pressure to fight enemies forever, but the soul is still immortal; watch the domineering power fill the world, and suppress the world, and the body will be immortal... Huh? You say, "Hey, what the hell are these? This is unscientific!" Otherwise, this is the dimensional journey of a scientist.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.