The snake lord's virgin boy Episode 15

Clay, the youngest and coldest genius physician in the Veperian Empire, is known as the "Right Hand of God." Obsessed with poisons and forbidden formulas, he despises desire and emotional weakness. Tasked with creating a potion to suppress the notorious Serpent King Silas's devastating heat cycle, Clay accidentally tastes his own creation—only to discover that it is not a cure at all, but a dangerous elixir that unleashes the deepest desires hidden within the soul.