Bakarina and Friends/All Routes Lead to Doom. The official title is something along the lines of "...Reincarnated as a Villainess in an Otome Game: All Routes Lead to Doom."
I guess, he prefers being the victim rather than the perpetrator. I didn't really expect any BDSM references in this series. I wonder if Clara has that in her.
Athens isn't above massacring citizens. In order to ensure stable production from the quartz mines it might help them maintain control. None of it may be necessary, looking at the paragons of Krishna from a few chapters back that would have preferred surrendering to Athens rather than dealing...
My guess, so far is that the Assam princess in Krishna that is trying to involve them in a civil war is a plant/setup from Orlando. Try to get Athens to waste time and resources stabilizing Assam and crushing Krishna and allowing Orlando to seize Krishna and possible chunks of Assam as well...
None of them seem to act much like they're 20 years old. I get that authors can write what they know easier than researching something different but it seems like so many Japanese authors only know about high school.
How rare for an isekai protagonist to actually have to learn something from somebody else. Leveling and skill points is one of the worst traits of isekai stories.