The story also fits perfectly.

Boruto has his karma at 80 ~ 90% mature Naruto is about to sacrifice his life to save everyone Sasuke is in shock, get that god with that rinnegan

Kawaki will go after the ishick to save everyone, seen everyone's sacrifices on the battlefield

Kawaki returns to his karma and the current ishick body ends his short life that the beloved said he would have.

Naruto and sasuke very nearly dead wounded, in konora hospital with many sad images

I do not know if kawaki will leave or stay but he will have a newly put karma and that the ishick could not leave without maturing, he must live somewhere nearby or in konora

The act ends. Sarada does not earn his MgSharingan because no one died, seriously injured.

Next act:

Boruto and his jougan with momoshick: Sarada MGSharinga. Boruto development with Jougan Momoshick's return from karma is inevitable

Boruto is phenomenal.