Arokey
Hopefully author doesn't kill off fam for mangekyo, as I feel that is a bit lazy considering you see it happen pretty often in fanfics.( Atmost you could probably keep the dad as dead, and make mom put MC under genjutsu to show why how he died(prob pull some bs that she had just given birth, but had gotten ambushed and he stayed behind to give his newborn and SO a chance.))