Anyway, our story focuses primarily on 15-year-old Ichimura Tetsunosuke and his older brother Tatsunosuke. Their parents were murdered by some xenophobic pyromaniac from the Choushuu group (Oh yeah... Did I mention it's 1864?), and (Wow. If you think about it, the series already sounds pretty interesting =D) Tetsu decides to join the Shinsengumi to hunt him down for revenge! Tatsu already works for them with his almight ABACUS! Yes, that thing that's sort of like an ancient calculator.
Anyway, at first he is refused. The person against Tetsu joining (other than Tatsu, who's worried about his safety) is the Vice-Commander Hijikata Toshizou. Who bears an eerie resemblance to the guy who killed Tetsu's parents (they're different people, though). Hijikata is VERY MUCH against it. He even kills several men (and a woman) in front of Tetsu to show him that if he joins the Shinsengumi, he will have to become a demon. After proving his determination by sitting out in the rain all night, the Commander Kondou Isami decides to let him join- as Hijikata's page! XD
Tetsu soon meets and befriends (in a sense) Kitamura Suzu, who is page to the Choushuu guy! Who's name is Yoshida... Toshimaro? They got off on the wrong foot LONG before finding that out.
Kurono-sensei herself says that PMK isn't all that historically accurate, but who cares!? It also features Captain of the 1st Unit, Okita Souji! See that guy in my icon who says "Jimmy Who"? That's him.
It's also got Nagakura Shinpachi (the guy with the bandage), Harada Sanosuke (the guy with the scars), Toudou Heisuke, Yamazaki Susumu, Yamanami Keisuke, Sakamoto Ryouma, and (you guessed it!) Saitou Hajime! Though PMK!Saitou is different from RK!Saitou from what I've heard (I've never seen him in RK). He's less psycho and more creepy.
So please check PMK out! Maybe if it gets more fans, ADV will release volume 4!