Actor Ryu Jun-yeol discussed his role in the Netflix series "Mouse," a mystery thriller inspired by the Korean folktale about a mouse becoming human by consuming fingernails. The series delves into themes of fear and self-definition, prompting Jun-yeol to contemplate how his character would be perceived. "Mouse" centers around unsettling questions of morality and what constitutes humanity. The story originates from a traditional belief, adding a cultural layer to its suspenseful narrative. Jun-yeol’s comments suggest the drama explores complex psychological territory. The series aims to keep viewers on edge as it unravels its central mysteries.