@Abetillo
Probably the latter? Marom (even when she was still human with her brother) doesn't seem like the sneaky technical type, she's the ludicrous OP boss power type.
Also shoot, just re-reading and I'd forgotten back in 33 Kredim already said that 40 is the final chapter (plus an omake), so I guess this really is the end game and no demon lord confrontation or more wrap up unless it somehow magically got a sequel
. Oh well, at least we get to see a bit of neat finale.
@mahtan
I wouldn't use "forced" exactly, in terms of how she is discovered it feels completely appropriately comedy for this series that it'd happen from goblin being late for work and digging through a mountain. But it probably is kind of rushed along if suddenly the author is trying to get it all wrapped up, I could have seen this exact same event happening but after another volume or two and other demons first and all that.
Then again maybe not, author may have just wanted to do a fairly briefly series putting a different spin on a common concept and that's that, not some huge epic. Nothing wrong with that, just wouldn't mind more.