Pure love is pure love, no cheating, no cuckolding, no rape, no, blackmail, and something like that. Just love between two people without any third party. That is what I think. If you think that cheating on your partner and then leave them just because your affair partner is better than your real partner or bear a child that is not your real partner's is a pure love then it's on you, but i never see those kind of stories as a pure love story. Maybe you see that their relationship is wholesome, but it doesn't mean that their relationship is pure, at least for me. That is my main complain about this game. I won't complain if they called that route as "romance route" or maybe "netori route" in the first place tho.