Spoiler alert

If the Emperor from Akame Ga Kill! appears, what should his fate be?

One fate I was thinking of is for if he survives his death in the source material, he might need to make amends for the horrible things Honest made him do.
If Riku made amends for what happened in the first KH game, then who's to say the Emperor couldn't?

I'm not sure what kind of fate he should have if he does die, but it can't be anything above an E10+, the fact that he's a child only makes things worse.