I don't want to talk about the ending, since it was obviously (and sadly) axed and the author had to wedge a conclusion into a part, that just wasn't meant to be there.
The synopsis is exactly what you get. The author seemed to have fun making this manga and it translated well into my reading experience too.
One thing that I really liked about this story, the "connected conscious" gimmick. I can't imagine how uncomfortable I would be in this situation, where my thoughts could leak into an army of spiders, who are expecting me to lead them to world domination and have no problem mutilating people in half with ease. Also, feeling every one of their wound as it was mine would surely drive me insane.
Apart from this, it's a somewhat standard isekai and you'll find plenty of your favorite tropes here as well, but it tried to do those in a decent pace, so it never felt slow to me.
In conclusion, if you are looking for an isekai junk food with a slightly crazy and evil MC, you'll probably like this one.
