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Nei, a youthful girl, whose hair is gathered in a ponytail, with eyes of a gentle peach shade. She employs the pronoun "boku" when referring to herself.
Nei possesses a lively and eccentric personality that includes a flair for dramatics. While she may come across as self-assured and even boastful regarding her speed and decapitating skills, she readily abandons this attitude in more sensitive situations. Beyond her skilled swordswoman persona, Nei demonstrates a somewhat immature and childlike nature. She remains attuned to her age and responds with despondency or aggression if not treated in accordance with her seniority. Maintaining a playful yet occasionally competitive rapport with Alma, she often engages in teasing and mutual jesting despite their underlying friendship.