Is the rest of this also Girl's-Love-focused, or does it divert into some weird story about aliens?
This is, first and foremost, indeed Girl's-Love and everything else is secondary. It's plenty gay on Adachi's side and how gay it turns out depends on how gay Shimamura lets it get, at least that's how I see it.
It's a VERY slow burn, from what I understand. Eventually Shimamura succumbs to her gayness, and they do eventually end up going out with each other. But that happens like in volume 6 or 7, so it's a ways down the line. This was just volume 1...
I try not to let myself get too spoiled about things beforehand, which is kinda dumb of me, but it's whatever. lol
Where did you find it? I'm interested in reading the Raw or wherever you got that info.
Even though the little girl is a bit much to handle, at least Adachi told how she felt to Shimamura. I'm satisfied with that. I like some progress are being made
I don't know if there's an official height that was said but Hino is really tall.
If Koguma is a typical 5 ft asian, then Hino is probably at least 5'10.