0, K1 and K2 work perfectly as a trilogy regarding emotional payoff tbh so it's a good choice to take a break here. Y3 is gonna have more of a beach episode feel while 4 and 5 extend the cast further with new stories so the focus on main story was definitely tighter in the games you played. 6 is a pretty great entry and conclusion to Kiryu's story. Make sure to join our cries for localizing Yakuza Kenzan and Isshin in the West once you're done with everything xD AC Valhalla now crashes every 3-4 hours or so, mostly after fast travel into densely settled towns or cutscenes. Definitely the first and last Ubisoft game I bought on launch day, this shit is ridiculous.