If you're a fan of the show who's looking for a fuller understanding of these characters' often-overlapping family trees and alliances, or if you've read the book and simply want a refresher ...

Kuroda is Shogun’s version of Oda Nobunaga ... In the James Clavell book, the author decided to make the family tree a bit simpler, and made Ochiba the daughter of Oda Nobunaga’s character ...