From what I understand, and this is, at best, quesswork, Ranma is somehow blackmailed/threathened into becoming the "girlfriend" of some scumbag, probably by holding Akane's safety hostage, gets preggers and is then murdered by the guy who shoots her to death. Akane clothes herself in Ranma's preferred style and takes revenge by beating the motherfucking hell out of the dude until his brains are pretty much dribbling out of his ears and weeps sadly. The last story image seem to be her dreaming about "what could have been" if the dude hadn't killed Ranma.
All in all, it looks like a very depressing story. I'm not sure I actually WANT to read any translation made of this.