At the very least, it would be a lot easier to mod this game to make the NTR more frequent and harder to avoid than Leane 2. Leane 2's was mostly just that there were only two vectors of NTR. Lose to bandits, which is hard even on high difficulty. Or wait 40 turns for the king to actually grab someone and then ignore the girl completely for two weeks.
(Seriously, the game needed some extra politics management and/or affection mechanics. Like having to navigate politics of the harem to convince him to let the girls go before he fucks them. Or get them out of there before he gets their affection high enough that they let him smash. Maybe both and they retain affection scores from the first time if grabbed again. Instead, its just a cash system with his mood points.)
In Dungeon & Bride, half the vectors are a management game and then the combat is more complex with more vectors than just loss. Tweak some variables around to make certain things like girls getting angrier at each other happen more often, making lust build faster in the dungeon portions, already taken rooms more frequent, and generic girls/monstergirls to sate the men with rarer to obtain.
Suddenly the inn portions alone could get really dangerous. No need for re-designing entire swathes of the systems or some such like Leane 2 would need.
It is Kirikiri Engine, which does have mod tools. What I said above would only require changing a few variables and/or equations. Which is simple to do. Finding the correct variables in the code that need to be changed would be the actually hard part.
In Leane 2, it would have been funnier to play the King (baroque if I remember correctly). With multiple endings depending on whether you force the girls into your harem, or seduce them instead. The NTR part would have been just with the bandits, but making them stronger (or at least less predictable) and opening the two hidden paths right from the start might be enough.
Back to Dungeon and Bride, I think we just don't have all the cards in hand with this demo. If I remember correctly, in the first demo, all characters had their own room preferences (something about room quality). There is no love hotel in the demo yet. And the reserved rooms are always the same (this was not the case in the first demo). And when the mercenary elf and the slave no longer please them, Max and Linus always try to change rooms in the snow village inn (it's still not hard to lower the girls lust before the night though).
Lust will probably increase faster in the full game, when we meet more monster girls and have sexier outfit for the girls. Harpies and succubi aren't enough and in the demo you don't have to fight them often. There aren't many lust traps either (and Max or any assassin/hunter can easily disarm anything)
Now a few questions.
Is it possible to light a torch or something in dark dungeons?
Where do I find the jelly? (it was with the wasps before, but they changed place and I they didn't drop it last time I went in their cave)
Where is the door to knock 7 times? (I remember it was in the sewers, using the hidden option in the warehouse, but I don't remember how to unlock the option.)
Is it possible to beat the white dragon in the snow part (I tried once but was under level)?
I can't reduce the lust for the human girl, I'm pretty sure I had the same problem with the previous demo, is it a bug or did I miss something?