Attack of the Beasts Kaido

Kaido, who traveled through time and became a beast in the new world, will become a man with an immortal body anyway, so let's continue to be an immortal... How can we continue to be an immortal? This is a new world. If we don't work hard to become stronger, we don't know when we will die. How can we have immortality in the future? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.