Complex sentence: Kurome and Wave end up together as well, and Najenda joins the effort to rebuild the empire with Akame still working as an assassin, to defend the restoring nation from its new enemies as she heads out to another foreign land at the story's epilogue.
Split into simpler sentences: Kurome and Wave end up together as well, and Najenda joins the effort to rebuild the empire with Akame still working as an assassin. To defend the restoring nation from its new enemies as she heads out to another foreign land at the story's epilogue.