Yometori x Gekokujou ~Wagamamana 3-Nin no Ane ni Gekokujo Sex!!!~ (RJ155836)

Our protagonist, Sawanoi Kazuki, lives his days feeling inferior to his three older sisters.
But one day, his parents reveal to Kazuki that he’s actually adopted into the Sawanoi family.
What’s more, they beg him to marry one of them and take over the family business after he graduates from school…!?
Who should he choose as his wife?…But more importantly, he needs to make his sisters understand his position in life.
He needs to thank them for toying with him as they pleased with him up until now…
Subjugate his three strong-willed sisters and turn them into submissive, lustful wives! A rising-from-the-low adventure game!