I love that the Senran Kagura virus is spreading. I really do.
http://i1.kym-cdn.com/photos/images/original/000/754/962/d94.gif
As a fan of the game, it's your basic beat-em'-up, focusing a lot of visuals and spectacle. Pretty Dynasty Warrior-esque in that you're beating up tons of dumb enemies at a time (though there's no tower defense). Once get to the end game or play on hard mode though, the challenge becomes very real. I still haven't 100% Burst, honestly, because it's damn near impossible. Also, despite the premise, the story is pretty tits (pun intended), the themes can be surprisingly deep and most of the characters are pretty lovable in their own way.
My only real problem with it is that it kinda lacks replay value for those of us that aren't that into playing dress-up, which is the major (and practically only) focus of the collectables. There's also no real reason to 100% anything unless you just like doing it for the sake of it.
Other than that though, worth the buy. Have fun, man. And if you have a PS4 or have gone crazy and purchased a Vita, I highly recommend the other iterations "Shinovi Versus" and "Estival Versus". They're the same thing, but in full-on 3D instead of 2.5D. They go deeper into the story and character motivations that were established in their N3DS counterparts.
As for the shame? Meh! Meh, I say! Who needs shame when there are sexy ninja beat-em-ups to play?