maybe but... Didn't Kakashi Kamui the Hachibi after that? Seems to me that if he Kamui Bee after coming back from the other dimension he'd be able to let of chidori or raikiri at least once...i think you may have found a small plothole there. ^.^Yeah, but using the raikiri would have left his chakra levels too low to do a kamui back so...
good point.Obito still had senju DNA if I understand correctly he might of healed himself or would still be alive
(My knowledge on senju DNA is not that great so I could be mistaken)
1) No. Later he kamui'd Hachibi mode Bee, after kamuing back to reality. He would definitely have had enough.Yeah, but using the raikiri would have left his chakra levels too low to do a kamui back so...
rasengan isnt an elemental jutsu and his mask tanked some damage.He already tanked a rasegan to the face, which has a elemental advantage over raikiri
I dont believe rasengan has any elemental propertiesHe already tanked a rasegan to the face, which has a elemental advantage over raikiri
To the OP even a kunai wouldve sufficed.. But that wouldve been rather anti-climactic wouldnt it?