I think what I liked about this game more than others of the type is its flexibility. Although it did have an appreciable amount of grind you saw the results of that grind more swiftly and your playthrough began to take shape. Yet you could also change direction if you didn't like the way things were going. It was possible to play it as an incest game, a harem game, or an NTR game. If you only wanted to focus on one love interest you were very likely to get her. It was possible to get them all, albeit with colossal effort. It was possible to get none of them. It was possible to let them slip into cheating on you, intentionally or not, especially when you tried to juggle them. The possibilities made the task list of each day something you had to plan and consider instead of mindlessly clicking through. Learning how to manage your energy and lust levels, while simple, was essential to shaping your playthrough the way you wanted to. A lot of text-based games make the mistake of making a sandbox where you just stumble around not knowing where the characters are hoping you are in the right place at the right time to get a scene. This game solved that early on by letting you know if a girl was there before you clicked. And even if you clicked where she was, you didn't need to engage with her.
I have said similar stuff like this on the thread before, but I think that the design of the game leads itself well to replay value. You can try to play identically to a previous playthrough and get different results. Yet those results will still be in the neighborhood of what you were aiming for. There is a lot to learn in how this game was set up, although it did have its problems that in the end led to the dev discontinuing it.