Kōtarō Katsuragi is a fictional character from the anime series Kōtarō Lives Alone. He is a young boy who lives by himself in a small apartment, navigating the challenges of daily life. Despite his age, Kōtarō displays maturity and resourcefulness, often surprising those around him with his independence. The series explores themes of loneliness, friendship, and personal growth as Kōtarō interacts with various neighbors and learns to cope with his circumstances. His character is known for his optimistic outlook and determination, making him a relatable figure for viewers of all ages.