Kronya lives and becomes your retainer. Claude dies. Dimitri dies harder. Edelgard dies so hard she is reborn. And Rhea dies so hard that she's not only reborn, she's your daughter from the future. You start a harem and become supreme ruler.
Your parents come back to life and you can marry them.
I like how this gradually spun more and more out of control.
Common sense - isn't. 3DS Friend Code: 2234 - 7147 - 9808