Strongest shinobi of the elemental nations

Atleast four chapters a week. This is my first novel so I don't know how good or bad it will be but I will try my best to write it the way like. Itsuki a young man without knowing about his parents died a meaningfull death. But fate has played a role and he mate the god of dream who also his grandfather without knowing he will travel from one world to another , gaining strength , knowing about the immortal and God world. Join his journey to become the king of element. Due to sacrifice yourself for other you gain massive karmic point. So u will reincarnate within anime world. Which world u chose? Itsuki said" Naruto world" Also I do not owe Naruto.