Reborn from a Mass Grave, Transformed into Venom and Gained Ten Thousand Times More Understanding

I thought I traveled through the foggy wasteland and was reborn in a mass grave. I thought I had a second life. It wasn't until I recognized the artifact that I discovered that the hero who saved the world was a fake, my loving parents were fake, and even my best brother prepared a road knife for me. This whole world is a hatchery carefully prepared for me. In this case, this organ that can transform into armor, this ten thousand times more understanding, these nine magical talismans - can be used to dismantle the chessboard and eat the chess player!