Young Kakashi was Jonin level, so I say him
I'd say Sasuke. I don't see young Kakashi Being stronger than Sasuke at the end of part 1. I don't think young Kakashi could've taken on one tailed form Naruto and won.
This is only cursed mark level 1 :O , but i still say sasuke at super high difficulty
There is seemingly no 'perfect' way to truly say goodbye. So I gathered a bunch of them!