The art is pretty cool. I wish there was more though, for each different ending. And maybe a "good" endings too. I'd recommend to set some ultimate goal for player, such as survive the encounter, and only then the next one will appear.
Well... I did not mean winning by killing monsters. How about winning by submitting at the right time or in the right way? So, the monster has his way with you, but deside to spare you and you continue to the next one? This could even include some MC progression (or maybe, better say sexual depraviation)) from each encounter. That way with each new level the MC can satisfy the harder enemy. And if you put them all in the same location, the playe will have to find the right enemy for their level in order to progress. Or they can always go to the toughest one and see his bad ending))
That certainly sounds like an interesting idea, I'd definitely love to see how the MC's relationship could build up with all the other NPC's if there was more leeway with the options they have presented to them with each encounter they might face based on every single race(s)/species/ monster(s) that might exist in their world, which depending on how the interaction went between the two of them either after they tried to talk them down or beat them in battle every opponent the MC comes across might maybe somehow start to develop a feeling toward the MC allowing a connection to form which in turn helps the other to become the MC's lover or just a friendly ally and/or whatever other kind of scenario that could happen between the two afterwards as this VN game progresses later on during whenever the creator has the time available to do that for this and their other projects as well.