SWEETEST. FUCKING. THING. EVER.
I've always said that the Italians were the original Mobsters. And I love the Yakuza and everything (especially since they're in many ways kinder the the common people than, say, cops), but as an Italian man I identify more with the Italian Mafia.
That said, this fusion of the Mafia, the Yakuza, and the Shinobi is the most badass thing ever.