Given the scarcity of games in development that have the potential to match the greatness of this one, I've put together some suggestions purely focused on the game's mechanics. The author may already be considering these ideas and have plans in place, but forums are for discussions, so please feel free to join me in the conversation.
1. It is essential to integrate the current magical power with the stamina growth. Currently, we have 2 out of 2 possible points of magic, and 15 of 15 in stamina. Everything is restored only and exclusively by sleep. It would be good if stamina is increasing gradually over time, such as hourly. For instance, if 2 points of magic remain unused every hour without requiring stamina for an action, the stamina increases by 2 points, so magic points work as a passive ability. This approach aims to minimize the need for cheating in the game and provides an incentive to conserve magic points. Additionally, the magic points could be restored through specific actions related to the MC's incubus ancestry. But these details are a matter of the story rather than the technical aspects and mechanisms of the game, and thus should be left to the author.
2. Sin, that is, what is shown in the game like this
should be increased or decreased by the actions of all household members. Therefore, the household should project an image of respectability and piety to the society, in order to prevent gossip and avoid drawing the attention of the inquisition. All members can raise or lower the reputation of the family. For example: Going to the beach in a skimpy swimsuit raises suspicion, going to the temple in chaste clothes reduces suspicion. Receiving guests in a bakery in decent clothes has no effect on suspicion, but receiving guests in skimpy clothes does and so on. Of course, significant donations to a religious community can make things easier and raise reputation and the like. The current lighting of candles in the living room does not seem like a good and convincing solution to me.
That's it for now, what do you think?