I played this on V0.10, and as such I don't know the ending yet.
The game is great, but the start is downright dogshit. Robin just willingly lets the MC creep on her repeatedly and then falls in love with him like a day later. This is awful and I would've turned the game off there had the animations been shit.
The animations are the highlight of the game. They're so good! The giggling of tits, the shaking of the girls as they cum, it's great. Oozing cum from their holes is a nice touch.
The story drags on a bit, but you've got a decent amount of content to drag you through it. There isn't much of a grind, but I could see some having issues if they don't keep working on their stats - which level up super quickly once you get the second location.
The scene at the bonfire was fucking hot and is currently my favorite scene.
The incest between you and your sister is generic porn-plot writing. Too many "oh, brother, cum in me!"s or "Sister, your pussy is dripping wet!" to feel real - it's like the dev is trying to remind you they're supposed to be related.
Overall, it's the writing that drags this game down. But it's not a huge problem, it's little things that some will catch while others won't. Definitely worth a fap or three.