Nino Nakano [Girlfriend]

Nino is a cute and cold-looking girl with waist-length straight hair (however, it is later cut to shoulder-length in Vol. 4 Ch. 46 and shown in Vol. 5 Ch. 47), and with square bangs hanging over her eyebrows. She has reddish-pink hair, which ranges from light pink to telemagenta in Volume 1 and antique pink to red-violet in Volume 4.

Her notable accessories are twin butterfly-shaped ribbons on both sides of her head. Like her sisters, she has dark blue eyes, an average height, and an excellent figure. She wears a long-sleeved sweater that covers her uniform and a pair of white socks that cover up to her thigh. She wears contact lenses to address her poor eyesight. Both she and Ichika use a handbag. She is known to be the most fashionable girl among the sisters, as she has various cute accessories and takes care of her nails. Nino has a bunny-shaped phone cover. Nino is shown to be able to cook, and makes cookies with cute designs on them. She also has cute oven mitts.

Nino has an outgoing personality and is social, which causes her to have many friends, noted by Yotsuba who calls her a "social butterfly". Ichika comments that she is the most delicate among the sisters. Nino has a sharp tongue and speaks bluntly when confronted by others, even her sisters. Her rebellious attitude makes her the least cooperative girl among the sisters.

Despite the cold and rude front, Nino is caring and protective. It is also evident by her willingness to act as the family's cook, ignoring her care towards her own appearance (cooking activities can lead to bad odor, damaged nails, etc.). She is also shown to always have band-aids with her, possibly as a precaution for Yotsuba's active behavior. Despite her motherly demeanor, Nino can be forgetful at times and is afraid of needles.

In Nino's dream it is revealed that she wants to open her own restaurant, and it has been her dream since she was a child.