I only read up to chapter 2 and i already know which char is crossover with which. Even those that i havent read before. Even for this 2 chapters, everything seem so fitting. You made the right choice for Snape. The ex leader of the 3rd squandron of shinsengumi squad became an undercover police officer...exactly what snape would do.
And then you potrayed Hermione as Kaoru. I was suprised at how canon you made hermione despite the tripping down part and saying," please dont leave" On Harry and Snape part, its understable because they are so similiar to kenshin and saitou hajime in personality and how they were brought up but other chars like Cho being megumi and ron being...errr...forgot that small kid name, but he was kaoru apprentice....but i must emphasize that ron's crossover is a work of art. I thought you make Ron as Sanosuke the fighter of the wind seing that both have a touch of humour but then you came up with Sirius Black, ex marauder and it fit more perfectly.
What you have here is a work of art and im going to definitely read it. That seth guy is probably the mensenger of shishio-voldie the guy who keep smiling, cant remember the name too....What im interested in is who is Seijuro Hiko the 13. Not Dumbledore i hope because i cant see that going to fit in but with your work of art, i say i would sure be impresse even if the dead dumbledore in your fic is Seijuro Hiko....but well,I love Hiko the most out of all the char in the fic and even though i really cannot see Dumbledore as Hiko Seijuro, i only read 2 chaps so i cant complain now. I write another longer review later when i read the whole fic. I have a feeling that you are going to add in alot of OC charaters seeing that you replace the smiling kid with his reduce earth technique with Seth which you said suddenly dissapear...I can think of better canon characters to be the assasin than seth. Ok, back to the point. Like i said, i have a feeling that you will be adding alot of OC character and hard to potray character like Manji....wait. I just got an ephiphany. That lap dog of Shishio-sama with no skill and turn mental and go bash up Shishio hq once shishio is dead is wormtail. Yep. Im definitely right.
Look, i know i only read the first 2 chapter but can you do a sequel once this is over? H/Hr can have a son who will be taught by whoever you're going to potray as Hiko and then Ron can fight H/hr son with the technique that Hr teach him. The legendary Hiten Mitsurugi Ryu against Kamiya Kashin.
I doubt that you will be putting in any sword technique however but having the godric grifindor sword as the reverse edge sakabatou pass down from generation to generation sounds nice. Ok, since i talk about a sequel to this story, a prequel would do good to. If you dont want to do the prequel i can do it for you. But wait....the sequel....once voldemoth is dead, its going to be all about ron right? Are you going to make a sequel at all? Please do. You should make a prequel too but what would be best is if you make it chapter by chapter like in the manga. You have to include alot of people including the pirates and Shogo...yea...the other practitioner of Hiten Mitsurugi Ryu...I would really love to see who you are going to potray Shogo as. Oh, i totaly forgot about my second best character. The ninjas. Remus and Tonks probably come in as the couple right? Extremly obvious because tonks want the relationship but remus think she is too young and he is too dangerous. Extremely fitting isnt it? Damn. Im a genius..but if im a genius than you're a prodigy. Please make sequel and prequels please?