Couple of years ago i played this 3DCG renpy game with shota protagonist who stayed with his mother and sister at some sort of summer resort and your task was to rise your mother guilt(by acting sad or getting accidently kicked in the balls) in order to pressure her to do stuff for you and also rise your sister submission or dominance( like lettings her win in pool-wrestling etc.), there where also some side characters with a bit of content like mother of some other kid(i think). IIRC it was some years ago and even then the game might have been already abandoned but still, if anyone out there remembers this game or what it might have been called i would be thankful.