I'll start this off by saying that this review will attempt to be as harsh as it can with this manga, but keep in mind that this should not be enjoyed as whatever you consider "a memorable story", but simply something you'd read if you're too bored, or to pass time.

This story was exactly what it set out to be, a low quality, ecchi manga that can only be used as content you engage in when you wanna turn your brain off.

I can't help but think of multiple occasions that it copied To Love Ru, even down to the name of the protagonist Retto - HxEros; Rito - To Love Ru; but I'll put that aside, seeing as how every modern ecchi/harem manga does that to a certain degree. Granted, I never expected an overarching plot, three dimensional characters, spectacular foreshadowing, unexpected twists and turns, or anything of the sort from HxEros in comparison to others that are alike, but given as how it took a more action-oriented approach, it definitely could have used some of those.

The story is simply put mediocre, with many conflicting elements and mismatched issues that are never really tackled, or given any exposure. The characters I'd say, succeed in somehow being slightly worse. They have one single personality trait that keeps them relevant, and that's also only if they're on page; not to mention many relationships and attempted developments that went kind of nowhere (seriously, how open ended are the protagonist's relationships with everyone but the main heroine?).

I suppose its one saving grace is the art. While definitely not fantastic, it made the readthrough much more bearable. I'm glad there were no weird anatomical moments, sketchy panels or questionable quality of drawings, but that should be a given, from a manga that has its characters more naked than clothed. Its quality is decent and definitely better than anything I can produce, but its constant use of bright shades brings its rating down, it could do with more tonal contrast, I know that "Eros" energy or whatever it is, is meant to be glowing, but seriously, tone it down.

Oh and the other thing that saves it is that it knew exactly when to end, a lot of these manga for some reason usually have issues with ending things before their "quality" plummets down (To Love Ru is also guilty of this).

To wrap this up, I'll repeat once again what I said at the start. If you're expecting an amazing story you'll remember for the ages, this isn't it. But if you know what you're getting into, and know that this is only going to be ecchishit you'll laugh at, or you're going to read it out of boredom, go for it. It's much better by a large margin than stories similar to it.