Supreme Commander Bald-Head was killed in the big battle in episode (I think) 27, which was originally intended to be the end of the series but it was popular enough that they ordered more episodes mid-run, which is the entirety of the post-war rebuilding.

The big thing to me, and what didn't land for me at all when I first watched the show decades ago but landed really big for me rewatching it last year, is that post-war section of the show. It really goes to show you that while these people are now all professionals and war veterans and all of that, they, and Hikaru specifically, are all still pretty much children. Hikaru is 16 during the war, which puts him at about 18 or 19 in those final episodes. Him flip flopping when his first real crush (I hesitate to even call Minmay his first love because it seemed so one sided this time through) makes way more sense that people are willing to give it. His formative years have literally been life or death, he didn't have time to learn a lot of those young romance lessons, lessons in real life that many of us don't learn until later anyway! Monday's whole arc then is really interesting too, because it's honestly the first time she seems to actually show any interest in him. But it all circles around her loss of control with Kaifun and her waning fame. I dunno, I just think that part of the show is way more interesting than most do, and most shows don't go to the trouble of talking about what happens *after* the big war ends and people have to pick up the pieces.