I sent Sekai Project the updated version for Denpasoft, and the updated patch. Since the updated version has been working fine for everybody who bought the itch.io version, maybe they didn't upload the new build. I don't want to buy my own game from Denpasoft to check what build they've uploaded, so I'm not sure.
Send me your email address, and I'll send you the itch.io version of the game which I know works properly, and tell me if you still receive the error during this scene.