Given that Samurai Warriors 4-II has a "II" in it, most would jump to the conclusion that it's the sequel to Samurai Warriors 4. Unfortunately that's not the case. It's also not truly an expansion either. So what the heck is Samurai Warriors 4-II?
New presentation of the story; Revamped upgrade system; Revamped ability obtainment; New survival mode; Local or online co-op
Visuals not upgraded; Not truly a "new" Samurai Warriors