There are both Netorare and Netori. and You asked if this game is a harem game, right? I also can't give the correct answer. In the future the girls will have sex with the main character. But there will be no sex scenes with them as a group. There will be a sex scene involving only two women.
Right well that is enough for me to pass on this anyway, think you might put a lot off with the netorare as its such a divisive and niche genre. By harem i mean the mc and many women that are exclusively in a relationship with the mc, not sex together (polygamy which i hate in harem), but word of warning if you are adding harem it wont mix well with netorare.