When the Formation Master Reincarnated and Became the Saint Catcher

This is a world of fairy tales. The story begins with one of the Seven Saints who endured a catastrophe. He was once a formation master, but after his reincarnation, he lost his memory and was taken back to the Beast Control Sect by two people by coincidence. From then on, he became a glorious "shit shovel officer", ahem, catcher.