Where do we start with this manga? how about the name. Just in the name itself you already know it's one of those long names that are a full sentence that ask or begs a question, a meme (if you wanna call it that) that has been crippling the Light Novel community for almost a decade now. Since the name of the manga has a Light Novel title (that is ironically based off a light novel by the same title) you find the main character (a suicidal NEET) waking up in a barn in medieval Europe and finds a sword and ... you know the rest, there's some info dump about the world which takes a lot of chapters, i'm guessing the author did this to avoid having to explain things later on but really annoying for a manga like this.

The Manga is ecchie oriented so there is a lot of NSFW scenes in it, even to the point where the main character sleep with his sex slave, yes that's right his sex slave, go read it if you want to know how and why. Overall the manga is nothing unique and just plays on the same isekai trope that has been going on for years except this one is based off a main character that wants to build a harem to curb his sex drive, i'll check back in a couple of months or years to see what has changed with this manga but so far, nothing unique in particular.