How did you like that story? Pretty hard to follow, right? I wanted

an interesting and intriguing plot, but I guess I overdid it and made it
confusing.<<

It was worse than that. It utterly failed to invoke an emotional response. 
There was nothing in the story to make me feel anything at all.
Oh yeah, why didn't Ranma just use the mirror to go back to the correct 
time after realising his mistake? Maybe he was a little too eager to die.
He read the journal, but how did he miss the message he himself wrote at 
the end?
When did he find the time to locate Colonge's ancestor, let alone take the 
time to teach those techniques? Also, how did he realise who she was? You'd 
think that he would have headed strainght back to the present after 
surviving the assasination attempt.
And:

Ranma: (Smiles)Seppukku Mokou Takabisha!!!!!

Seppukku Shishihokodan would be more appropriate.

Sorry, I must say that your story is too contrived for my tastes.