Is Perfect susanoo a EMS or Rinnegan jutsu?
u may be thinking that this is a stupid question but its not. I DO KNOW that susanoo is a MS/EMS jutsu, but is perfect susanoo? why do i ask?
Susanoo is formed through the materialisation of the user's chakra and as such differs in appearance, as well as colour between users. meaning that susanoo is a jutsu that its strength is based on the user's chakra.
now why am i asking whether you need the rinnegan? well im not saying u need the rinnegan exactly, but to awaken the rinnegan an uchiha would need senju DNA.
What were the Senju and Uzumaki known for? life force and physical energy
What were the Uchiha known for? powerful chakra and spiritual energy
Please note that 'powerful chakra' does NOT mean large amounts of chakra.*
chakra is made by combining spiritual energy and physical energy, and this is used to make susanoo, the uchiha's powerful chakra combined with the senju's life forece is then used to make the perfect susanoo which is why it is called 'perfect'.
As one of the strongest techniques granted to those that have acquired the Mangekyō Sharingan, it is the user's guardian deity, but at the same time, it consumes the user's life
as you can see, susanoo consumes the user's life force which is the senju's gift. an uchiha having senju dna will give him the life force and physical energy in combination with his powerful chakra and spiritual energy needed to use perfect susanoo
where i am going with this is that an uchiha with the MS/EMS would have a susanoo the size and strength of that similar to sasuke and itachi. whereas a uchiha with MS/EMS and Senju DNA would have a susanoo the size and strength of that similar to madara.
So i think susanoo is an EMS jutsu but senju DNA is needed for perfect susanoo, im not saying im 100% correct but its just a thought.