Just a heads up, while you do have the saves, it does not open/unlock all gallery or flowchart. You still have to go through it yourself to unlock it all. Easiest way to do it is use a macro until you get to a decision.
So, here is my input of the game:
~Animations and voices are great.
~Flow chart is also great. If you want to just get to the juicy parts, you can use a macro. Or you can play through normally to get the story. Flow chart is definitely a plus since you can get an ending and go back easily to get another ending.
~Being able to see the scenes unlocked helps with the fapping. I do like finishing a story and coming back just to fap.
~Having a status of completion of animations and cg is also nice. That way, for those that are completionists, they can play to get 100%
Unfortunately, that is all for the pros, as for the cons:
~There was no animation for the school friend. I understand that its mainly about the mother but if you are going to introduce a school friend like it did here, at least have one sex animation.
~The male friend looks like a pig. If you are going to have a NTR route, at least let him look more handsome. Someone you might actually have competition with. He seems like someone that will get fat and bald at a young age.
~This is a VERY heavy NTR game. There was only 2 routes where the son, Yuu, is able to sleep with his mother. I have this in the con category since I am not a fan of NTR. If you are going to have an MC that is the player, it would be nice that the NTR is not as heavy. Especially for his flow chart. Of course, this is only my preference and opinion but its very deceptive when it came to playing. My suggestion would be have the MC's route be 75% his route and 25% NTR while the mother be about 50-50. At least then, those that aren't fond of NTR would be appeased. That is not to say I don't enjoy NTR games but when its this heavy and the MC has to watch every time, it becomes unpleasant. It's like he has the worst luck.
Again, this is just my opinion and preference so I don't speak for everyone. I know there are others that love this kind of content so this is perfect for them but when I first played, I felt deceived when it became too much of an NTR.
Aside the NTR route, and yes, I read the tags but this doesn't mean I don't like NTR, just not this heavy, this was actually done very well. I also know this is a Japanese game so the original developers will not see this review but hopefully this can be a warning to those before they play and choose to download or not.