After Rebirth, I Overthrew the Hypocritical Teachers

In my previous life, I was deprived of all my luck by my master, and my soul was burned just to fulfill my little junior sister's path to immortality. When I opened my eyes again, I went back to the day when I tested my spiritual roots. The junior sister pretended to fall again, hoping that I would miss the soul-finding moment. This time I walked right past her and let her fall into the mire. Best talent? Unparalleled immortality? This time, I want you all to pay back double the amount! But on the road to revenge, I accidentally picked up a bigger secret - the dying demon king who was saved by me was actually willing to bow down for me and burn all the nine gods.