Well, i'm kind of agree with my above friend, but i will talk for me...
So, played this game for the first time.
So, ok, the english is poor, but it's easily understandable, i'm not english native too...
For the rest, i will say that this game had a LOT of fetishes (Lesbian, 3somes, NTR, cuck, ect ect ect) that is great for a game, for sure... BUT ... the logical result... It's a MESS. A big mess, a tons of characters, a tons of choices who are finally not really important. I understand the try by the dev, and i appreciate his efforts, but god, it's really a big mess only. The characters are ALL relatives? No, that kill the fun for me. The characters wants all to fuck the couple? No.. no... Too much.
For me, a nice try of game, and seriously the idea could be great, but it's too much a fan service more than a real creation with a story. Remove some characters (the secretary and the MC bro... Come on, send them in an island and forget.) build some story, and go slowly in your sex scenes.. No need an orgy on the 0.6 update...
But i wish the dev to keep his creation, just work the scenario could be amazing.