Review Detail of DeathKid in Billion Dollar Player

if I'm right this novel was an imitation of a chinese-japanese anime called The Silver Guardian where it have the same hidden game like world with the same power concept where the richer you are the stronger you are the same from the anime the mc here was also a billion player where he also start by finding someone here he was searching for his brother in the anime he was searching for his childhood friend/heroine while protecting the real world from the invasion of monsters from that world as the last tomb guardian so basically its's the same.