This sort of scenario works for Esteren as well, where the normalcy of village life is juxtaposed against the mystery of the murder & the true culprit can be a Feondas (instead of an oni).
The danger of these sorts of scenarios in a con situation is the heavy RP that is tied to doing it. This can either shine or die really fast. (I once ran a module in 3E DnD with 10 lines of text for the DM everything else was on the character sheets, with groups who got into the RP 4 hours wasn't enough, with the group that didn't the game ended well under 4 hours...)
Another plot I've used was based on an OA monster that is the ghost of a mother who does in childbirth and her similarly ghostly child. As is typical of such myths in Asia the term ghost is applied loosely. The plot was that the village magistrate was killed and the PCs are sent to investigate, arriving they are attacked by spirits drawn to places of great misfortune and soon after arriving they learn that the village has been going through increasingly hard times. A monster has been attacking and killing the village's children and other monsters have begun to plague the village. When the party arrives there is 1 pregnant woman in the village and she is due to give birth soon. As they investigate the village monk is revealed as a ghost as well (he was drowned by the real villain) and though his death is suspicious there is no other real evidence. Then a new group of monsters attack as the mother goes into labor. This is the ghost, who is also the midwife for the village, creating a distraction so she can feast on the newborn. She was essentially impossible to kill for the 1st level party and always escapes to be a recurring villain and success in the adventure is living and rescuing the baby from her. (Most groups do, it's DnD).
Something like that would play out well in Esteren as well, allowing you to get a few fights in for the "action junky" players but still having plenty of scope for RP and allowing plenty of opportunity to convey basic setting information. Some of the monsters just need to become Feondas, and the midwife need not be such a creature but could just be mad and maybe part of the tweak is uncovering why she goes over the edge...
Yes I do need to sit down and work up some canvases or scenarios
That said, I think that Shadows of Esteren discourages that sort of thing in this game world, though perhaps it would be interesting to create a scenario using this stereotype and seeing what interesting direction we could take it in? 
