Amazing. Dare I say this game is almost on the level of "How to Raise a Happy neet" if only because it throws away all the energy and money mechanics that all life sim porn games tend to have. No need to worry about being knocked out from exhaustion because you talked to your sister 4 times in a row or having to worry about earning money to eat food. The money is only required to increase intimacy faster (parfait) and to last longer in bed and both things are dirt cheap to buy. Furthermore the money system has an autoclicker feature which means you just grind at it for a few minutes and you can forget about money for the rest of the game. The sex gameplay is quite decent. If there's any caveat to this game is that your sister is kinda mediocre. There are no special day events nor does she talks to you out of the blue which tends to be the norm in these games. The talks you have with her are kinda meaningless and there's almost no change in her vocabulary as she becomes more accustomed to sex. Regardless for such a short and competent game I got nothing but nitpicks so yeah totally recommended.