Nachi is a shipgirl launched in 1927 but has the appearance of an 18 year old schoolgirl. She has orange hair tied in a ponytail and wears a school uniform that shows off her pink bra and panties as well as her large breasts. She also has wings on her head. Nachi, a heavy cruiser, embodies a mix of confidence, elegance, and a somewhat lazy demeanor. She takes pride in her position as the second ship of the Myoukou-class heavy cruisers and as the first post-treaty heavy cruiser from the Sakura Empire. Despite her self-assuredness, she occasionally reveals her playful side and shows a tendency to be a bit lazy, even enjoying watching others work. She doesn't hesitate to assert her dominance, often teasing others and showing off her perceived perfection. Nachi has a complex relationship with her own abilities, as she wants recognition but can be reluctant to display effort openly, especially in front of others. Her interactions with her Commander suggest that she values their opinion and feels comfortable being more genuine around them.