This Elixir Is Poisonous

This is a world where monsters are rampant, and the hope of mankind lies in the "alchemist" who can refine the magical elixir. The Holy Alchemy Hall is the highest palace for alchemists. The master of the palace, "Dan King", returned from the restricted area of ​​the Demon Nest eight years ago and brought back his last disciple, Fang Che, and then announced his retreat. As the "son of the Alchemy King", Fang Che should have been the favored son of heaven that attracted everyone's attention. However, he was a "waste" who was born with a dry spiritual field and was unable to complete the last step of alchemy. All the elixirs he refined were "waste products" with unpredictable effects on humans, and they were the laughing stock of the entire Holy Elixir Palace. Until an accident, the "Waste Pill" he refined by himself was accidentally eaten by a monster. The whole world has been quiet since then. Fang Che suddenly realized - my elixir doesn't seem to be able to save people, but killing monsters... Seems to be particularly suitable? When the orthodox path of alchemy fails, a path of "reverse alchemy" that specializes in "side effects" and takes the opposite direction is opened! This is a relaxing story about a "waste" using the most crooked way to find the most correct path to salvation. Let's see how young Fang Che relies on his unique skill of "trapping monsters" to go from being a "shame" in the Shengdan Palace to becoming a legend that scares all monsters!