Yeah, this definitely feels like the author is planning to make it very short, maybe just one volume long at the most, or it wouldn't be rushing this fast to set it up.
On the other hand, I honestly prefer a fast pace to a story that drags on, and the hero is still unaware that she's in the kind of manga where everyone's a lesbian.
Also, it might not be intentional, but it's pretty much a tokusatsu tradition that the first episode crams in as much as possible, and then slows down a bit for the rest of the series.
The suit design is very cool, too.