Review based on V0.1 of the game.
The basic story is what we have already seen 100 times in other games. MC has lived separately from his family for some years but suddenly has to go home again to help his family after his fathers death who died under suspicious circumstances.
His family consist of the usual characters, a kind but naïve mom, a cute, energetic younger sister, a bitchy older sister, a sexy aunt and a funny female cousin.
There is a twist though. Unlike in other games, it's not the MC who suddenly realizes that he is attracted to his family members and starts to creep on them, but actually few years before the start of the game after becoming drunk he already had sex with the older sister who had a secret crush on him. Her current bitchyness is probably because MC has treated this event as a big mistake and left the family home to study in a different city leving his sister behind and later on he even brought home a girl who later cheated on him.
The younger sister is also not the usual naïve innocent girl who doesn't know anything about sex. She actually has a lesbian relationship with their cousin and they are both sexually interested in MC after the younger sister accidentally witnessed him and the older sister having sex on that day few years ago.
That means since the sisters and cousin don't have to go through the usual gradual seduction/corruption the dev could use this situation to create a somewhat unique relationship plotline with them.
I hope this will be the case otherwise this game will really be just another iteration of the same cliché story and events we have seen hundred times.
Other than this, the game doesn't really have anything that would set it apart from other similar games.
The writing is not bad. Nothing really exceptional, but at least it's not engrish and the dialogue feels natural and fluid.
The character models would be ok, but the faces are low detail and look empty most of the time. Other times when they show strong emotions they can be so distorted they don't even look human. So there are tons of games with much better graphics out there but if that is not the most important to you it's still acceptable.
To sum it up, no part of this game is really outstanding which would make it average at best, but it also doesn't have any big flaws that would make you really annoyed why playing which makes it a solid play experience.
I gave it 4 stars in the hope that dev could make something out of the situation with the sisters. But even if not it's still at least an average game with rather solid game experience that you could check out if you have nothing better lined up in your queue.