That was a funny scene. Quality assurance is strong with this one.

I was at first wondering what's the point of those war time flashbacks, but as it has become increadingly evident that the place they are living in is governed by a military junta, it started to make more sense. It's just a pretty weird constrast between how prosperous and peaceful the beginning looked like and how things really are, with various military and possibly paramilitary groups trotting around in mecha and waving guns, threatening and kidnapping people with absolutely authority, with no worries of consequences. In that sense I find it a bit annoying how naive the main character seems. But perhaps that's why the girls keep falling for him, both human and alien.