I see, thank you for your feedback!
I am planning to make friendship/love routes, that's why some sex scenes can be avoided.
But the thing is there's lots of main characters, and if I made both routes for all of them, it might made the update really slow, so I'm thinking of making the harem routes first, then the friendship routes much later.
I'm still undecided right now. I think I can just make the difference in both routes only a little, so it won't take too much time in making both routes. In the meantime I will make it so that some sex scenes are avoidable.
Regarding the dream sex, there's a reason why it's unavoidable. And for the reason itself, hopefully it'll become clear in the future events, though you can guess a little based on what already happened. But you're right, you can think of it as a nightmare for now.