I really enjoyed my time with the demo and I'm looking forward to seeing how the game will progress going forward. Here are some thoughts and feedback from my time playing.
Watching the gradual corruption and lewdification of my character as I continue to willingly submit to the enemies over and over again is exactly what I love about these kinds of NSFW RPGs. I absolutely LIVE for all the little bits of flavor text on all of the traits.
If I could make a bit of a selfish suggestion here, I'd love it if there was a slight flavor change with the use of the "surrender" skill. It fully removes the ability to resist during a grapple, so it basically means your character is no longer resisting the enemy and is now actively choosing to have sex with them. So it would really help sell that scenario if the narration and dialogue would be different after you use the surrender skill. For example, the regular dialogue for most of the cowgirl scenes only mention that the enemy is moving their hips to ride you, but the surrender version of the text could mention how your character has now started to thrust his hips up to meet them and etc. Just generally showing that you are now at least a slightly more active and much more willing participant.
I'm a big fan of breeding kink, so all the dialogue related to it is greatly appreciated. It would be nice if there was an additional cut in for the sex scenes which mention breeding that just has an egg (or several) with a heart in its center surrounded by sperm just to really drive it home. It should probably only appear near the end of the scene when the enemy's womb is full.