I did a quick playthrough (against my better judgment) and I have to say that if you are an NTR fan you'll probably enjoy the game, so give it a try, but if you're not, don't even bother.
I usually say that people should try the games and judge by themselves if they should continue playing or not, but I really can't see how a harem fan can enjoy a game with a pencil-dick wimp MC going against a big-dick bull, who can pretty much get away with anything he does and perv around with no consequences.
We once again have an attempt for a "zero to hero" story where the MC instead of 0 starts from -100... There are underdogs who have the odds against them, but you're still rooting for them because they're likeable or you admire their courage, dedication or whatever and there are "underdogs" you just want to put out of their misery... So, yeah. In my eyes it's pretty clear what case we have here, and what the main focus of the game is.
Since the dev said there will be a harem path, I don't have any reasons to say it won't happen, but I don't really find any enjoyment in constantly trying to stop the "bulls", because at some point in the future there might be some sort of payoff.
Anyway, I still want to wish good luck to the dev with whatever story he has in mind! I'm sure there's a fan base for that type of content, so he should be fine.