And so at last we come to the end of the great Matsu the Scorpion's bloody, weird, and incredibly thrilling saga. This is the only entry in the series not directed by Shun'ya Ito, so I was a bit nervous going into this film; I've really enjoyed all the FPS movies, and I really didn't want the final outing to fall flat on it's face.
To my great delight, this film didn't fall flat; it delivered everything I'd want from an outing with Matsu. At the same time, Matsu's story seems to be wearing a little thin; at this point in the saga she's escaped from prison with others, had her revenge, and in the last entry ("Beast Stable") she even become a kind of savior for oppressed women. In this entry, history more or less repeats itself; the storyline in "Grudge Song" is relatively the same as the first and second entries ("FPS #701" & "FPS: Jailhouse 41"), only the story is compressed into an hour and a half. If you've seen the other entries, you pretty much know what's going to happen in this entry, and while there isn't necessarily a problem (people still line up for Marvel movies, and they're all relatively homogenous), to me, the series has started to loose a bit of it's appeal, and I honestly think ending it here was probably the best choice: go out on a note that is still relatively positive, and people will be keener to return to the franchise. I, for one, will happily go through Matsu's journey multiple times in my life.