Reincarnated in the World of Dragon Ball as a Human

Is being a saiyan the only way to survive in the universe of DragonBall? Many people from Earth believed so, but an otaku with that luckily got reincarnated in Dragonball after dying. Not willing to entrust this new life to Son Goku and his friends, he is willing to go to any depth to become strong.

Disclaimer: I don't own Dragonball and its franchises.