Okay, I'll answer topic by topic:
Harem: We haven't decided yet if there will be or not. What exactly do you mean by harem? Does the MC have access to several girls? If so, he already has it.
* Lesbian: There is no actual lesbian content, but there are threesomes with 2 women.
* NTR: No.
* Femdom: No, but the personality of some women like Beatrice and Julia is more dominant. This should be repeated in the interactions with the characters, but it is nothing extreme.
Partly to the content Harem is what describes that he has access to several women, 3 or more to be exact, as you say yes, it's fine, but with respect to the Harem ending it is that the MC can stay with all the girls, especially the main ones, in your case all the ones on the banner , so that would be the question, can the MC keep them all or will he have to choose one?
Personally I would prefer her to have her harem, but it wouldn't be bad if there could be both options, that is, a final Harem and an ending for each one.
Regarding the lesbian thing, as long as it doesn't happen without the MC, it's fine in threesomes and if you decide to implement that, make it so it can be avoided, so the player can decide what happens and what doesn't, this as a recommendation.
Let's think about what you mean by "stay"?
Do you mean that the MC will have a romance with one of the girls or with all of them?
If that's what you mean, then you won't be able to "stay" with any of them, because this game has nothing to do with romance, love, passion, none of that.
Now if what you mean by "stay" means that the MC will be able to fuck one or all of the girls, then the answer is yes, the MC will be able to fuck all of the girls throughout the game.
This game is all about sex and nothing about romance. There are no feelings involved other than a hard-on on the MC's part.
