Well....
This was a thing...
I honestly regret wasting time with this thing, at least somewhat. Like, a number of the sex scenes are pretty hot and all that... but... uh... How should I put this? The story is REALLY dumb... and the characters are fairly dumb too... Like how they try to explain how Haruka having spiritual powers causes her to make people around her horny whenever she gets horny, and how she's more sensitive than normal girls because of her status as the Oni-Cutting-Princess and whatnot... However, they totally fail to explain why the rest of the family doesn't make an effort to explain all this shit to her and take steps to prepare her and other things.
There's just... a lot of plot holes, even for hentai. Doesn't help that MC isn't particularly likeable either.
Also, this was supposedly based on some kind of Web Novel or something... and I dunno how that one was written or whatnot, but the adaptation was clearly half-assed. I say this because, for example, Yume is described as having boobs that are noticeably bigger than Haruka's, while Haruka's are supposed to be large, and then there's the child-hood friend that's supposed to be flat.
However, Yume and Haruka have boobs that are pretty much the same size in both character sprites and H-scenes, and the child-hood friend just has normal-sized boobs? Like. The art and the descriptions seriously don't match well. Or how the sword Haruka wields is described as red, but we never see that.
There's a lot of problems like that...
Then there's the fact that the story is actually very linear. You have 5 choices in the game that either let you continue the story, or jump into a bad-end. With the 5th bad-end giving you a 6th choice that lets you pick between a short bad-end or a fairly long one. However, it's not like full on VNs that build choices on one another and whatnot which leads to various endings. It doesn't help that the choices are pretty non-sensical too. The first choice you get is about which pair of boobs MC likes the most, and if he thinks about Yume's boobs, things go well, if he thinks about the boobs of the childhood friend, the story veers into a bad-end... and there's absolutely no logical connection between one and the other. Pretty much every choice is like that, except perhaps the last one, where you can guess from how the story went so far with establishing that Yume is a pathetic moeblob that's mainly there as a plot device and for horny reasons.
Not that any of the characters have that much of a personality to them...
Also, something like 80% of the VN is smut, smut, and more smut. Which is not inherently a bad thing... but... I dunno. The whole thing is just lame. It tries to take itself seriously while still using ridiculous hentai tropes without the backbone needed to pull it off in a decent way.
So yeah, I guess that one guy that rated it 2 stars is pretty right.