You are right: I bought it on Steam because I have loved its mechanics. Erotic scenes are well made but Netoria's big point is the fire emblem style combined with the groping system: personally, I think it would be nice, if you could expand it with more possible groping actions during battle.I've had this conversation a few times over the past week, but the reality is that the attitude of "the game is doing well because it's quality" is not the whole story. I've made games that are much higher quality than this that have performed much worse. People really resonated with this game's specific implementation of combining the lewdness with the Fire Emblem style combat.
I am happy to know sales are going well.