Nana Osanai is a model who appears as a supporting character in Case Closed: The Fourteenth Target. She has been working as a model since she was seven years old. In the film, she becomes one of the targets in a series of attacks linked to playing cards, specifically the seven of spades, which corresponds to the number seven in her given name. Nana is invited to the AquaCrystal complex along with other acquaintances of Kogoro Mouri, including food critic Minoru Nishina, photographer Eimei Shishido, and television personality Peter Ford. Her personal background and motivations are lightly explored; she is shown to be somewhat outspoken, as she openly complains about a restaurant recommended by Nishina and challenges him to a wine-tasting test. She also appears visibly nervous during the events, explaining that she had a near collision with a motorcyclist three months earlier, which left her unsettled. Nana does not undergo significant character development, as she is killed during the film after the lights go out in the underwater restaurant. She is stabbed, and the killer leaves a seven of spades card at the scene. Her relationships are limited to her status as a guest and acquaintance of the main characters; she has no notable personal connection to the central cast beyond the shared invitation. Her role in the story primarily serves as another victim in the numbered attack pattern, helping to illustrate the killer's method and furthering the investigation by Conan and the police.