The thing I love most about Jesse and Genji confirmed to be in Blackwatch together is that they’ve lived such diametrically opposite lives the likelihood of shenanigans just bursts through the roof so fast that it’s gonna give Gabriel a migraine practically 24/7.
Genji was a spoilt ninja rich kid so he tells McCree the benefits of exfoliating, how to kill a man with those huge thighs, to properly wear a suit and ball dance while undercover, make every cocktail known to man, and that there’s the way the military uses knives and the ways ninjas use knives.
Jesse McCree was a gang member in his teens and then lived in the military so he shows Genji how to actually use a kitchen, to fix vehicle engines while under fire, the many virtues of dishonorable fighting, make field rations edible, and dealing with the inevitable guilt and loss that comes with fighting in an army.
I just like the idea of these two guys making deep impressions on each other that blend into their personal styles of fighting and what type of people they eventually grow up into being.