In the uchiha residence you can hear screaming of a woman in the clan heads home.
Fugaku: come one push Mikoto!
Mikoto:I am!. After a few minutes of struggle two baby's appears in her arms but one of them looked strange the baby was pale and had three eyes on his face and eyes on his hands his hair was also white and had little horns but that was hidden by his hair and to end his strange appearance the baby even had a tail!
Mikoto: I will name this one sasuke and this one will be izuraki. While Mikoto was naming the two another figure walked in and ran over to mikoto and the two baby's that were crying.
Itachi: hey why does he look like that,he even has red eyes in his hands. The boy was very confused, fugaku looked and saw the eyes in his hand were indeed red with rings in them.
Fugaku: maybe it's a mutation and a new dojutsu, i will take him to the hospital to check him after they are fed, come itachi. Fugaku was a bit happy about this one the other hand he was upset that the boy had pale eyes like the hyuga. but his clan would gain a possible new dojutsu, he also wondered what the third eye on the boys head contained as it was closed, fugaku and itachi walked out of the room and Mikoto showed her Brest to the two baby's and the started to feed.
Izuraki: 'Damn why didn't that god put me in a basket on their doorstep this is weird now that I'm actually Conscience unlike my last life, well while I wait to grow I'll make my own tailed beast'. A few minutes after feeding the two baby's went to sleep and fugaku walked back in and collected izuraki to take to the hospital.
While walking to the hospital the baby in fugaku's arms received strange looks from the few that were out late. Twenty minutes later fugaku arrived at the hospital.
Doctors: well the child seems fine but I would like an hyuga to come and check the child over if that's alright. Though reluctant fugaku allows the doctors to get a hyuga, fugaku could use his sharingan to see his chakra he could not gage the amount he had. A few minutes later hiashi hyuga the clan head shows up.
Hiashi: it's late and I'm tired this better be worth my time. As he walked through the door he saw fugaku with a strange baby in his arms who was now awake due to his tail being squeezed by the doctor earlier and because the child was now awake hiashi could see his pale eyes similar to his own.
Hiashi: hey you aren't stealing kids from my clan are you fugaku?. Hiashi said with a hint of anger
Fugaku:now why would I do that when you know our clans are clearly rivals because of our eyes.
Hiashi:because the kid has the bykugan and if he really is your kid I think you should hand over those eyes of his because the uchiha should not possess the bykugan. Hiashi goes to take the baby's eyes only to get blasted away by the child's eyes in his hand, this shocked all those within the room,fugaku then smirks.
Fugaku: hahaha that's what you get now get on and scan the kid so I can leave. Hiashi got up not wanting to be in the presence of fugaku any longer activates his bykugan and looks at izuraki's chakra, after checking izuraki's chakra his face morphed into that of shock.
Hiashi: h-his chakra levels are well above that of the kage and rivals even tailed beast,also he has some other chakra source within him. What hiashi did not know was that he had only half his remaining chakra because he was forming a tailed beast within him.
After checking izuraki hiashi quickly left the hospital angry because he got embarrassed by a baby and said baby has the bykugan and does not belong to his clan.
Seeing hiashi leave fugaku decided to leave as well returning home,once fugaku got home he returned izuraki to the arms of Mikoto and went to sleep.
(a/n I'm having the momoshiki rinnegan and rinne sharingan have the ability's of the purple eye rinnegan)