Nagisa Kubo is the female protagonist of Kubo-san wa Boku (Mobu) wo Yurusanai. She is a second-year student in Class 1 at Haruka North High School. Nagisa has long, purple hair, stands at 160 cm tall, and possesses a slim build. Her playful and mischievous nature brings a lively energy to her interactions, as she enjoys teasing others. With her ability to easily find Shiraishi, Nagisa's character holds potential for significant contributions to the story.