It's actually better this time around.
The four groups of girls get transported into a beach of sorts, there's five new girls(Two of them are a bit older though), and they have to fight because of the Bon Dance thing, and the road to Kagura and nobody gives a damn about the plot. To be fair, it's slightly better this time around, I remember skipping the story due to how stupid it was in Shinovi VS, but I actually read it this time around. It was stupid, and while it did earn a few honest laughs, most of the time I was laughing at how dumb it was. In conclusion, it doesn't mean much, but the story is a tiny bit better than the previous time around. It's still just silly excuses to have the girls have each other, but still. The story is told a bit differently this time, instead of each group having their own story, there's a single 59-mission story thread that has you playing as the different girls. And each of the 27 girls get their own 5-missions sub stories, for almost 200 missions in all. You could easily clock over 20 hours on this game.
That said, the game recycles a few stages from the previous game, and while there's quite a few new ones, it's not long before stages start repeating. Sure, enemies might vary, and even the route you have to take, but it's the same 12 or so stages, spread throughout over 150 missions. That said, stages now feature more enemies than the previous game, which is something I liked, specially seeing how the combat feels much better. However, bosses are a chore to fight. Not only do they have super-armor, meaning that staggering them is hard, they can just interrupt your combos with their supers. And sometimes it feels as if they get infinite supers, and they spam them over and over again. It's not even hard to avoid, just boring. Hit, hit, dodge, wait until they execute their super, get in again, hit, hit, dodge, wait, close in again, etc. It can get very, very annoying. Another thing I wasn't particularly fond of is that the individual storylines must be unlocked by destroying the 80 'festive platforms'. They aren't hard to find at all, and the game tells you how many of them are per stage, but they just felt like needless busywork to pad out the game.
Also worth mentioning is the relatively high amount of DLC. There's about 3 DLC characters, even more if you own the Japanese Version(Due to licensing issues they didn't make it westward). I don't particularly care about the DLC characters, but putting them, grayed out, on the character select screen is just tacky. And mind you, I think the 25 characters(27 with the free patch) roster is perfectly fine, with characters having entirely different movesets and what not, but having all the DLC characters on display on the character select screen feels as if they are trying to pry the money out of your wallet, which is something I just can't ignore.
6.0 out of 10