Fair enough, but I´m not sure Kaido would ally with Hanafuda if he viewed him as a random jobber, let alone raise his kids. He looks down on weak people and losers, so I imagine at some point in time there was a lot of respect between the two. I compare this to Garp and Roger, because I also view that as the two hated eachother in their younger days, but they grew to respect eachother after God valley. from the Buggy/Shanks era of the Roger pirates, they only really fought Wb.