Obok with Japanese Jump comics

Question / bug report

Hello, I've had this issue with Obok since I started using it years ago with the PC Kobo application. Whenever I use the plugin on a Shonen Jump comic in Japanese it always comes out garbled. As an example, the most recent Kaiju No. 8 volume, volume 8:

So I run the Obok plugin and it decrypts it fine and whatnot, but the result in Calibre is the following (the bottom one is Kaiju. No. 8, Vol. 8):

If I extract the images from the epub, the file names are always a bunch of seemingly random numbers/letters as well, which is the most annoying part, since those are what I back up.

It also isn't friendly with comics from the Young Jump magazine, like this Kubo Won't Let Me Be Invisible volume (which is the highlighted book in the above image):

I re-ran the plugin in debug mode and attached the portion of the log that is the Obok plugin, but I don't think it's particularly helpful.

I should also mention that it works fine with all other Japanese manga/light novels that I own. It's only the Jump ones that do this.

Which version of Calibre are you running?

5.42

Which version of the DeDRM plugin are you running?

v10.0.3

If applicable, which version of the Kindle software are you running?

No response

Log output

Obok DeDRM v10.0.3 - Decrypting 怪獣8号 8
Trying key:  b'ad5640e0cfcca1c2906af0a06ea27854'
Success!
DEBUG:   19.0 DecryptAddProgressDialog::do_book_action - decrypted book: '怪獣8号 8'
Obok DeDRM v10.0.3 - Added kclzqwxj
Obok DeDRM v10.0.3 - wrapping up results.

noDRM / DeDRM_tools