Kobato Hasegawa is a key character in the anime series Boku wa Tomodachi ga Sukunai. She is the younger sister of the protagonist, Kodaka Hasegawa. Known for her love of the fictional anime series 'Black Dragon,' Kobato often dresses up and acts like a vampire, mimicking her favorite character. This habit gives her a unique and eccentric charm. Despite her gloomy appearance, Kobato is a sweet and caring person, deeply attached to her brother. Her interactions with other members of the Neighbor's Club often reveal her playful and innocent nature, contributing to comic relief in the series.