What do you mean ntr elements? that sound's a bit vague? Also what are the other tags?
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.