"Kōtarō Lives Alone" is a live-action adaptation of the popular manga and anime series. It follows the story of Kōtarō Satō, a young boy who lives by himself in a small apartment. Despite his age, he navigates daily life with a mix of innocence and resilience, forming bonds with his quirky neighbors. The series explores themes of loneliness, friendship, and the challenges of growing up. As Kōtarō interacts with the adults around him, viewers witness his unique perspective on life and the impact he has on those who come to care for him.