Oh dear... Yet to go through the complete series but Sarah, Akira and Pai all have the same issue. They all have a 4 pixel column of corruption and can see a bit of interlacing (but even changing it to 1024 doesn't remove the problem, tried two different programs as well, same issue).An example of the issue.

The title screens and menus are fine but it affects all other pictures, Sega and AM2 logos. Still investigating but from the looks of things, the corruption may have come from Sega themselves when converting the images to the Saturn and that's worrying...

Jacky doesn't suffer from this issue though, there may be some others as well.

Update: Worse than I thought... Wolf, Lau, Shun, Lion, Kage and Jeffry all have the problem too. :( Sounds like Jacky really was the lucky one. Noticed the later ones added credits that's not affected by this issue.