Quack.

I personally don't mind incest, as long as it makes the story good. I like fucked up, but still good stories because they're really intriguing for me.

But if it's something like this... I don't really like it that much. It's not bad, but in terms of preferences, I prefer story over smut (but I like it better when it's both). I don't like it when incest, rape, etc. is romanticized as something cute and totally normal. If a story has those, it better be drama because I like it that way.

Now, preferences and personal biases aside, I'll give this one a 6/10 as an overall rating, 9/10 for the smut, 6/10 for the story, 8/10 for the characters (high score because hizuki(?) hyper-carried everything lol. Everyone else is questionable.) This manga is not made to appeal everyone, and certainly not me, but it's fine.