His Skill's Poison Can Stack Infinitely,Killing One Monster Increases His Poison Power by 1,No Limit

What the story is about

Such Chun enters a system-governed world with a hidden poison-focused class that lets him build up deadly poison stacks as he kills monsters. At Sky Vault Academy, his overwhelming damage and unusual summoned serpent guards draw him into dangerous dungeon incidents and the search for ways to refine his skills.