A character in Go-toubun no Hanayome and second eldest of the Nakano Quintuplet sisters. Nino is caring and playful with her sisters, she shows a grumpy and somewhat aggressive personality to outsiders. Her best subject is English, and is also fashionable and skilled at cooking, hinting to have dreams of becoming a chef. Due to her poor eyesight, she wore contact lenses.
She has blue eyes, large breasts, and long pink hair (later short) stylized with blunt bangs & sidelocks. She wears two black butterfly-themed hair ribbons on each side. Her school uniform consists of a open black cardigan, white collared shirt, green pleated skirt, and white thighhighs.
Her voice actor is Taketatsu Ayana (Japanese) and Jill Harris (English).