Sisterly Lust v1.2.1 Extra + Walkthrough by Perverteer - Adult Sex Game

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...