I'm probably thinking way too deeply about the "cute angels with guns" gacha but this post reminded me again about something I was thinking about while playing the game... Where exactly do the BA girls come from? I mean that in the birds and the bees way, they age like normal humans and we know they don't just spawn into existence since there's at least one line where an NPC mentions spending time with family plus the whole plot point about Atsuko's bloodline/lineage, but as far as we know, Sensei is the only normal human man in Kivotos and all the others are furries, robots, or otherwise unusual beings (Gematria).
At the end of the day the game's only a few years in and a lot of things about the setting are intentionally left open to exploration, so who knows if that'll be fleshed out later on. I kinda doubt this will ever be explained since I can't see there being anything but massive backlash if they reveal that either the BAs reproduce through ips cells or whatever form of yuri mitosis, or if they reveal that there's an all-male Kivotos counterpart with halo boys somewhere in their world
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