Seeking Looking for Game with Blue Haired sister Girl (game changed name)

[nixwp11]

I played a game that had a girl with blue hair that was your sister that I forgot the name

There was a part that you needed to buy her a smoothie or something because she was mad with u, game past time was really in beta and had not so much content and I really need to know it name pls help

 

[Robert_Satsuma]

not sure if its the game you are seeking but Deviant Anomalies has a purple hair sister that you can buy a slurpee for her after she gets mad at you. the game also does have a blue hair girl you meet that works at a store you go to by the slurpee