REASON

After the failure of his VR arcade business, Gangho falls into despair after his younger brother is killed in a traffic accident shortly after an argument during a night of drinking. Consumed by guilt, he withdraws from life. As he spends his days gazing at the stars and longing for his lost younger brother, he becomes obsessed with a possibility inspired by the speed of light. If information can travel across the universe, could his brother still exist somewhere beyond his reach? Determined to bring him back, Gangho returns to the scientific studies he abandoned long ago. A gifted child once enrolled in a science program, Gangho immerses himself in quantum mechanics and discovers striking similarities between its principles and the logic of video games. Gradually, he begins to suspect that reality itself may be a vast simulation.