This is from a post I'd submitted to Janime's
Webboard. For what I was talking about in the beginning to make sense, here's the link-
And Yes, I'm AibouTakato.

Here

*ok*... I only read the first page (probably not a good thing for me to do) and I didn't even read all of it (which is even worse) But here's my whole thoughts on Inuyasha, theories and fact.

I'll start with the first point brought up in this topic.
Midiroku (sp?) and Inuyasha's mother being the same..? I know this has been butchered to death but:
For one, that was a good thousand or so maybe years before Inuyasha's mother was born...
Let alone Inuyasha himself.
Inuyasha's father wanted to protect humans, even though he was a taiyoukai (legendary demon). The two swords were made because Inuyasha's father wanted Sesshomaru to get rid of his hate for humans, while for Inuyasha to be able to better defend himself against his demon blood which could kill him because of being Hanyou. (half demon)

Sango's clan is intricately connected to the Shikon's creator.. but that's pretty much all we know.
Kikyo and Kagome have nothing really to do with it except that they have extremely powerful purifying abilities. The 3 have nothing in common (if you understand what I mean by that.)

A thing with Inuyasha, if you hadn't noticed, is that the Gasenbou tree (I dunno the name.. but basically the tree inuyasha was pinned to) is the center of everything along with the well.

In the movie 'Love that Transcends time' We're told that the tree and well are (made out of) "Time tree's", which connect all timelines.
The Shikon no Tama simply connected, and perhaps just gave kagome the ability to go through time, because Kikyo sure can't go through time, and yet Inuyasha can... Which brings another point..
Isn't it odd that only those 2 can go through time?
In the movie also, Kagome and Inuyasha were able to speak to eachother through the Gasenbou tree.

Meaning that the tree symboplizes where everything began, and where everything will end.

Inuyasha was pinned there, Kagome lives on the shrine's grounds that don't exist in the past.

How was the shrine made, and who created it?
It would have to be someone(s) who knew exactly where the Gasenbou tree *and* the well were to perfectly map it out to be on 'such holy grounds'.
The Higurashi shrine is also *in* Inuyasha's forest.

On a another note, the Higurashi name didn't exist in the feudal time, so how did that blood line get started...?

And why are there no more demons? (For the most part, except for the weird exceptions) This is now at my theory, so here goes...
The group finally finishes creating the Shikon no Tama. By this time Kikyo has already been long since destroyed by Naraku (this happens in.. episode 130 something or another... I don't remember the exact ep, but the title is 'Goodbye, Lovely Kikyo' or something.. go to InuyashaWorld.com). Because of this, Inuyasha has turned all his attentions to Kagome, and finally breaks down into telling her that he loves her. The only thing now to decide is whether or not Inuyasha will become human or youkai (demon).
I would have to guess that either, he doesn't do either one and his youkai blood simply dissapears down the bloodline, or he becomes human for Kagome, even though that will make Tetsaiga useless to him. (Or perhaps, Tetsaiga was destroyed? that sword doesn't exist in the present time either, from what we know.)
But the wish may be to simply have all demons be earased and turned human. It's another possibility I've come up with.

And so, at the end of this theory, the final conclusion would be is that Kagome and Inuyasha get married, start the Higurashi line (which honestly sounds awkward that she created her own blood line X.x0 But I guess that's where the Kikyo factor comes in, since Kagome's her 'reincarnation') and that's how it all ends....

...And yet.......

...........begins all over again.

A never ending cycle of a story, wouldn't you say?