Adult PC Game: Summer with Mia - Season 1 - Version 1.53 Steam by Inceton Win/Mac Archive

You the protagonist, are an 18 year old that is about to finish highschool. You live with your mother, father and a hot sister (Mia).
The game starts 2 days before the end of school. You are behind in schoolwork and need to catch up on studying to pass. Your parents are going on a trip to France for a week. You are studying late at night when your sister comes home drunk.​

Summer with Mia - Season 1 - Version 1.53 Steam by Inceton Win/Mac Gameplay Preview