I definitely disagree with Jamada's review. This series definitely knows its market and knows exactly what it's doing. There is no figurative dick sucking, just very literal sex with underaged-looking characters with no semblance of a story in sight.
This series has sex. It is literally hentai. Please read past chapter 8 if you don't believe me.
There is nothing going on here. The characters have no character. There is no plot. There is nothing but a fantasy for lonely Japanese otaku to self-insert into. The MC is literally a blank slate with two cute obedient caring elf girls waiting on his beck and call.
Even if it's a parody, it fails at being even a bad one. There is no relevant comedy or humor anywhere in this series. There is absolutely no justifiable reason to give this series a high score. Even if you want cute, easy to read material to self-insert into, there are tons of things out there to read, so go read those instead, they're literally everywhere.
I can't believe anyone would ever give this series anything higher than a 3, and that's stretching it.