Until recently you've lived in a different part of the country with your father. Your parents divorced when you were very little and the family was ripped apart after a fierce custody battle. Your mother took her three daughters home, while your father moved away with you. You haven't seen your family since and any attempts at communication were very much discouraged by your father.
But now, everything has changed after his sudden death. During your fathers funeral you were approached by a woman you instantly recognized as your mother. She asked if you would be willing to go home with her, meet your sisters and be a family again.
You hesitantly said yes...
The patch works on all Sisterly Lust releases starting from v0.33. The patch restores all incest content that is currently censored in the standard edition of the game.
Find the game on your computer, then copy the incest_patch.rpyc file into the following 'game' directory (PC: SisterlyLust/game or MAC: SisterlyLust.app/contents/resources/autorun/game). This will restore the game's original incest content.