This was rather nasty and uncalled for.

It made a lot of sense as well, so the Dealer's could enjoy the power without the nasty side effects. Practical, fitting and satisfying.

I'm not saying anything that's not true.

Alright, knock it off now.

I think that's why I generally prefer tech-based Riders, because the belts generally have the underlying idea of "oh, well someone built it obviously." I just wish more series gave a viable explanation.

If you really wanted to know the slightly less vague details on the belts' and Advent cards origins but don't mind spoilers from the endgame:

Shiro created the Rider belts in lab along with Kagawa making the Alternative belts in the same lab. We find out later on that Yui can survive in the mirror world without any nasty side affects like other people who usually dissolve. Along with the fact that Kanzaki shiro is also a ghost with no physical form and appears in the Mirror world with Yui, it could be inferred that Shiro used either his or Yui's DNA to create the Rider Belts and Kagawa used that DNA as a base for the Alternatives. Its not completely crazy since all the contract monsters are all reminiscent of child Yui's drawing's

Plus Japan just seems better at sci-fi in general. I've yet to see a fantasy toku series with a coherent and thought out mythology.

Hibiki 12

Asumu accidentally discovers the Hibiki-Cave, and soon discovers more about the battles between the Makamou and the Oni.

Oh and hey! Proper explanations for disc animals! Also, Midori turns out to be way more important than I thought.

Asumu finds more similarities between himself and Hibiki. Feeling bad about a situation he couldn't stop. Hibiki shows these souped-up Makamou why you can't just get by on a power-up without training!

Then he defeats what appears to be a giant mollusk-tree. Bizarre. And Mochida becomes friends with Ibuki's sidekick, who I never realized was going to same school as Asumu and Mochida. Maybe it wasn't mentioned before...

Hibiki 13

Asumu's got a bad stomach ache it seems. And the Makamou got themselves another power-up. One which incites cannibalism, which I assume also makes the cannibal-Makamou stronger. Oh hey, a new Oni! He didn't stick around for too long, though.

So, Asumu has appendicitis? Hmm.

Ryuki 4

Shinji works...at a weird place. Anyway him followig Ren down the street, calling him Ron for five minutes was hilarious.

So Shinji, believes Ren is up to no good, but the chick assures him that Ren may be a shithead, but his hearts in the right place.

So Shinji and Ron become sort allies it looks like. Have a cool tag-team fight at the end against those two monsters too.

Ah and the first hint of another rider! They didn't show much of him, but I'd say he looks pretty crabby.

Yeah, the next Rider's contract monster is Mr. Krabs.

Spongebob! Make more Krabby Paties!

Can he also start fires under water?