Apparently, WavePad for Windows might have the ability to open up r.20 Files.
Otherwise, I wonder whether someone could take the Seiken Swordriver, dismantle it, take out the chips, and figure out cut content from them. Extraction of files from the Seiken Swordriver, crossed with using WavePad, could be able to find sounds directly from the Driver.

I think one of the more interesting implications of the events of Kamen Rider Saber is that now it's somewhat more plausible for there to be a KAMENRIDE: SLASH card and an ATTACK RIDE: BLADE card. The Punnett square is complete.

https://www.youtube.com/watch?v=SiImQlZH_7g
This is Evil's Henshin Sound.
Can someone help figure out what it says?

I don’t know

"Versus Up! Bat! Hehe! Kamen Rider Evil! Yeah-haha!"

Ah I was dead wrong about the weapon gimmick. Just from the initial scans, I figured it'd have a gun mode, but it does make way more sense that because Evil transforms with the weapon, it would have a standby mode.

There's something real charming about the fact the Vistamp says "Bat" like "Battou", and the transformation functionally being similar to the Swordriver.

So it's part Bat Rogue and part Necrom. I shall call it... Kamen Rider Batrom. :lolol

Actually I think you might still be right about the gun mode. Based on the scans, there definitely seems to be a swivel joint near the base of the blade that can rotate it 180 degrees:
https://www.tokunation.com/attachmen...0&d=1632576606

What's more, in the full body shots of the scans. We see there's definitely something going on with the other side of the blade:
https://www.tokunation.com/attachmen...1&d=1632576839

hum...
that's an... interesting fashion.
If that's his own devil making him like this, it must be the king of edginess