I've read the incomplete It's Not Easy To Be a Man After To The Future and the strangely ended Major General Spoils His Soul-GuidingWife. I really liked both novels even though there are issues. Anything else out there? Search functions (or lack thereof) make it hard to find my specific requirements.
Do you want all three of it in one novel? Have you use 'novel filter' or search 'mecha' sub-genre? I found what your looking for, all in one. But it's yaoi, not josei/shoujo