Spending a Month with My Sister

Spending a Month with My Sister is a game where you play a random guy surviving on part-time jobs, a premise common to many H-games. Your sister moves in with you for a month to “learn more about males.” As the story unfolds, you’re going to fuck her brains out at her request. With a 31-day time limit, gameplay revolves around increasing her favorability and sex education.

You’ll balance your stamina with the need to work for money and clean the house. These “grind-a-thons” don’t provide the best stat bonuses; they’re more like supplements. The best stats are gained from events or weekend interactions. H-gameplay is mostly “click and cum,” locked behind stat requirements. Bizarrely, a sleep sex mini-game is vastly more complex than the others, with zero stat requirements to unlock it beyond buying a book.