I'm going to be as brief as I can be with this because in many respects this manga does not really deserve a full-on review. It starts off as a standard isekai with middle of the road character designs, mostly flat side characters, and a generic overpowered main character. Apparently, the author was actually aware of this from a fairly early point, because the series takes quite the special turn in the fourth chapter. And by that, I mean it turns into softcore porn, and then it just stays that way. Okay, I'm exaggerating a bit, but the story after this point becomes more and more focused on getting to the next underwhelming sex scene.

So I'll just show off best example, in the front bit of chapter twenty-three the main character (sorry, it's not worth my time to check what his name is) and some members of his harem are talking about a tournament they are going to compete in. They completely skip that tournament only mentioning their placements, and then use the rest of the chapter to instead step up for an "arc". For you see, the older sibling of a character we briefly met for like 2 or so chapters, must sacrifice herself in order to defeat the super-duper evil demon dude named Lucifer (I think) and the younger sister wants the protagonist to intervene. Over the course of the next two chapters he, of course, sleeps with both sisters before sneaking off whilst they sleep to face the demon. Which is mostly skipped except for the beginning bit that is shown as a flashback/recording with a magical crystal thingy. Then, as you can probably predict at this point, everything devolves into a big old bland orgy. So of this 3 chapter-long "arc" half of it is easily devoted to having sex, and 45% is devoted to setups for things that that are just skipped anyways. Then the rest of manga is pretty much about him convincing every female in the story into marrying him, and no I'm not kidding because I seriously don't remember a single female character that did not get caught up in this. By the way, every problem from this point onwards is just solved with sex, so there's no real point in going into more detail about any of it.

Now just to be clear, I'm not hating on it for being fanservicey, because that's not the issue. The issue is that it has no appeal beyond sex scenes (that can't be too graphic else it couldn't be published in a magazine anymore), which you can find far better and less censored versions of in actual porn. Normally ecchi stories differentiate themselves from just straight-up porn by emphasizing the creativity of the scenarios that cause the sexy bits, that most actual porn just isn't going to spend time on. Which I think is pretty nice as a distinction, as there are plenty of series that use that creativity to bolster the comedy or appealing to some weird fetish no one knew they had. But this just isn't at all what Butsuri-san does, as it's consigned to its fate of just being bland softcore porn that no one wanted or needed.

To put everything I think into one sentence, it started off bland as all hell and somehow found a way to get worse every chapter. Frankly, the only reason I read it all the way through was that I caught it early on (honestly binging this series would just be impossible to do) and a sick morbid curiosity as to whether it really could continue to get that much worse. And now that I know the answer is yes, and I can't help but regret wasting my time on not only the series itself but writing this review about regretting reading this deflated soccer ball of a story.

In other words, do not read this manga unless you've literally read every other ecchi, harem, romance, comedy, and isekai in existence and just need to see some boobs that badly or you just plain hate your self that much. And even then, 999/1000 you will deserve better than what Butsuri-san can give you.