I gave it a go and... it's alright. I do like how you change things up by having the lad's training be determined by using the scroll wheel of all things. It's a nice change of pace for these types of games. I like it quite a bit, the lad ain't even like stereotypically hung or something like that. It's a nice balance. I look forward to the tallest woman in the group. Something about her design speaks to me. It's a great art style and I patiently await to see more as it develops. Best of luck I have only a few suggestions.
In terms of the scroll wheel mini game with the tread mill, I think it'd be nice if it was constantly moving rather than stuttering in one direction or the other. Otherwise I quite like the execution and look forward to more.
I also hope there's more options in terms of play style as mentioned from another commenter. I liked what I tried but did not know you may eventually be able to change what style to play, mouse or directional inputs for the mini-games.
Lastly regarding names, would be it okay to know what the names of the other ladies are? I hope to see more of them soon. I kind of want to know about them a little bit more than what's been shown in the demo.