Board Thread:Improvements and Issues/@comment-5355747-20130313062554/@comment-26420452-20130710104340

@ Rich Joker First cousins are children of your aunt/uncle. I didn't insinuate that Isshin is Kūkaku's father, in fact, I wanted to say they're probably much more distantly related than uncle and niece, because Kūkaku is currently the head of the main house, while Isshin used to be the head of the branch house.