Vol 10 cover.
Ray looks like a generic isekai murderhobo chilling with his slave loli after committing genocide and breaking every law in the Geneva Convention.
Kaido said this would be a side story set containing the first white pages, Ep superior outlaw, and an original story about Ray, while vol 11 would be Gloria.
Still no Ep superior I anywhere, but I guess we should appreciate that they've at least stopped avoiding the side stories altogether. I guess K figured that the incoming anime fame will offset the potential losses from shifting away from the mainline story.