Devastating The Murim with My Little Sister

They say in life if you are not at the top of the food chain, it's only a matter of time before it becomes your turn to be prey. They say only the strong can survive in the Murim, I and my little sister after getting transmigrated survived painfully, fighting and fighting, climbing our way to the top, protecting her every step of the way. We finally found ourselves at the top of the food chain, at the top of the Heavenly Demon Divine Cult. But life just had to be so cruel, a plot out of jealousy got I and my sister killed, I watched her die in my arms and I could do nothing but just painfully watch. But maybe life wasn't as cruel, it at least gave me a chance to exact revenge. I was reborn into the Unorthodox faction. This chance shall not pass me by. Anyone or anything that stands in my way... I shall burn... I shall massacre... I shall Destroy...