Nako Kitamori, codenamed Panna Cotta, serves in a covert defense organization hidden within a restaurant. Her upbringing in a strictly traditional Japanese household, with a family heritage of Ikebana, instilled a reserved demeanor and emphasis on proper conduct.

She stands 153 cm tall with a slim figure and pale skin. Her measurements are 73 cm (bust), 43 cm (waist), and 73 cm (hips), categorized as an A cup. She possesses long red hair with blunt bangs and garnet-colored eyes (sometimes depicted as silver). She is often seen in traditional attire like kimonos or the organization's waitstaff uniform paired with thigh-high stockings. Her birthday is March 3, and she is 18 years old.

Trained to embody a "perfect Japanese woman," her personality exhibits quiet restraint and emotional suppression. This contrasts with an inner desire to express feelings more freely, occasionally visible in private interactions, such as sincerely thanking Shuuta after he rescues her from a Libidoll attack.

As a Famiresu Senshi (Family Restaurant Warrior), she combats antagonistic entities called Libidolls, which target women for sexual assault. Her role blends frontline defense against these threats with standard waitstaff duties in the restaurant serving as the organization's cover. She operates alongside teammates Pudding (the leader), Chiyoko Fujiwara, Harue Kagami, and Serika Gotou, using their collective abilities.