The scanlation I found stopped at Chapter 9, which was in the middle of the climax. So I'm upset, because this what-if manga is Dope As Hell. The basic premise is that Eureka begins successfully returning her memories to the Scub Coral as she had initially planned at the end of the show. But that's just the start. Obviously, Renton goes after her. But, less obviously, so does Anemone, and we actually get some scenes with the three of them together. Not only that, but it gets into the mechanics of what Eureka was planning to do and the changes she would have gone through. It's notthe most filling manga I've ever read, but it's a wonderful concept and well told in spite of how short it is. Definitely recommend seeking this out. Hopefully, one day, it will all be online in English!