Potential for an 8/10.
I feel like you've done the opposite of most creators, you've learnt how to animate before you can tell a story.
You already have the ideas for at least 10 incredible scenes in this 10 minute playthrough, if you develop a backstory and universe to set these scenes I think you're on your way to making a visual novel that would become an instant classic. Obviously on release it might be better to set custom relationships and stuff to avoid getting shot down.
The male character is a bit scuffed at the moment but I imagine that if you are planning to dig deeper into this project you will make the model more immersive.
Female model and posing is excellent, you clearly know your stuff in this area so no further comments on that.
Key take away would be to build the story environment, and slowly increase the tension between the two characters. Obviously this release is more of a demo so it is story lacking, but I really believe that there is huge potential if you decide to make this a full project complete with a story.