Let's start by saying that it doesn't even come close, not even to the anime. If you haven't read the light novel yet, I would recommend it before watching this manga. I found that it has many nonsensical plot twists, and not because of the premise that it's a poorly made game full of bugs and broken weapons, but because the characters themselves don't make sense. They change their minds every chapter. It's very forced how they can go from anger to instant understanding so that the story can continue without too many problems. When they included a loli in his harem, I felt alittle weird, I'm not going to lie. but they don't give her much importance, and the fan service for the mother is quite present. I have no complaints about that. The protagonist has a lot of initiative, but I must admit that he is quite clumsy. But hey, there aren't many similar manga, so maybe this one will entertain you at least, since they have many adventures in so few chapters.