1- Orochimaru has always been obsessed with Uchiha and Senju powers ... thus, Rikudo power.
2- Orochimaru possesses both Hashirama and Madara's DNA.
3- He created Mitsuki to be "Genetically PERFECT".
4- Perfection to Orochimaru cannot be without Rikudou Powers.
5- Therefore Mitsuki should have...