What sets this book apart from other Isekai is the concept. Shin is overpowered, like many isekai protagonists. Unlike just about every other story of its type, there's a reason he's as strong as he is. He earned all his powers and skills through years of grinding in the MMO version of The New Gate. The isekai version may not be exactly the world he remembers. But, it's close enough that he can walk around and do things without feeling like an outsider.