Well, this is definitely one of those nukige that's only good for a fap/schlick and literally nothing else. For me, the art's gorgeous and the animations are pretty good. So I definitely got some use from it. However, it has zero replayability aside from using the animation player for the aforementioned reasons.
There's pretty much no story aside from what's said in the overview. There's no explanation about why the sisters like the MC or have the hots for him, or whatever it is. No elaboration on why they're willing to share him. No actual ending beyond him going back there for good to keep getting fucked by them every day. Nothing.
Also, the MC is a TOTAL doormat. He basically never initiates sex with either of the girls. It's always one or both of them jumping him, or stripping or something and tempting him into sticking his dick in them. Absolutely no personality at all. No initiative either. When he's with both of them in the few scenes that feature both of them at the same time, he doesn't try to finger or grope the girl he doesn't have his dick in even once. Hell, he just doesn't finger either of the girls, ever. He barely does anything with his hands in the scenes... The most you get is one of the girls riding his face of her own initiative while the other rides his dick. This only happens once.
Speaking of. Scenes are super vanilla to an extreme degree. By that I mean that even though he cums in both girls repeatedly, and the text says that he does a lot more off-screen as the days pass and whatnot, the risk of pregnancy isn't mentioned even once. Beyond that, there's only one boob-job. No real blowjobs, in the sense that there's no scenes where either girl actually takes his dick in her mouth, but they do lick it together once. No mentions of anal or anal stimulation of any kind. No sex toys.
Basically, if vanilla is NOT your thing at all, this is a super easy skip.
For me, it wasn't a bad way to waste a couple of hours, but if I were to actually bother with that horrible, tiny rating window, I wouldn't give it more than 3 stars at best. Not because of the H-content, but because there's nothing BUT the H-content and it's lazy to the point where getting a full save and enjoying the animations directly means that you lose pretty much nothing.