THIS REVIEW CONTAINS SPOILERS!

Only 10 english chapters are out but I only see positive reviews so I thought I'd share a "negative" opinion.

::: Plot :::
Well your average guy gets summoned to a fantasy world with video game elements from opening a book... Hopefully that gets rationalized later, but I'd bet the true reason is to gain more otaku readers.

Once there he, along with 3 modern day gamers, is given the groundbreaking quest of defeating demons that will appear from some fissure. The twist is that, from the get-go, he is discriminated against and becomes unjustly hated by everyone within two chapters.

The twist should make the story more interesting; but the complete lack of rational thought/discussion from all the characters, which leads to events, makes it unbelievable and even comical. No one ever tries to use reason, the MC just goes straight into victim mode and just goes along with the madness whenever he has to give more than one sentence's worth of argument.

::: Characters :::
So an entire world (which you can technically leave without winning) you have absolutely no ties to despises you, you verbally express and emotionally feel hate towards it and its inhabitants whose behavior is just shy of spitting at you on sight, so what do you do?

Well you go through and carry out your given mission to save the world and anyone you encounter with absolutely no second thoughts... Wait what?

That's right the MC wears a perma scowl, constantly complains but pretty much does everything he can to be righteous. Sure he sometimes acts like a rebel, but you can bet he'll follow it up with 1000% righteousness without ever struggling between what is right/wrong.

He reminds me of a character from a manga (forgot which) that permanently glares and acts pissed off while going way overboard in helping anyone that needs it; however, that behavior was played for laughs in a comedy manga...

The other characters aren't really worth mentioning, just standard archetypes. Thus far there is only one known villain of questionable motive who just enjoys being evil to the MC while wearing a smile on their face.

Now in most stories, a random soldier will question an evil order and receive a menacing glare/threat before going through with it; it illustrates he, and likely other characters, don't enjoy persecuting the protagonist but do as they're told for self preservation.
Not here, you get to see an evil smile as an evil order is received; 99% of the population is comprised of sadistic evil dicks, only to the MC though.

::: Art :::
It looks fine? Not sure how you can really grade art sooo moving on.

::: Conclusion :::
Though I score it low and bash it for being shallow mainstream while trying to be edgy different, as mentioned earlier your personal enjoyment will depend on how much depth you want from your fiction. I wanted to bring up the negatives that I observed to go along with the glowing reviews in order to give a complete picture.

It's not a boring read and only somewhat painfully bad at times so I just turn my head off like when I watched SAO1, a show I kept watching, entertained, right up until the Asuna tentacle scene where I thought to myself: "Wow, was that even necessary? Did they really go there? I'm done."

The only problem is all the Fridge Logic you may experience after reading.