Many of Rokuzo's experiments have ended in failure, including attempts to recombine Nana. - Nana's mother who lives in San Francisco for business reasons. She loves Nana dearly and wants her daughter to be as successful as possible. She and Yuichi run into each other in San Francisco without either of them knowing how the other is connected to Nana nor does Nana ever know her mother and Yuichi have met. - Nana's father. He also lives in San Francisco. He is a bit of a pushover, but also loves Nana a lot. He is more sentimental than his wife, especially when he notices that both Nana and Grandpa want to remain in their house in Kotomachi, but tends to go along with her wishes. (Miss Honey) - A girl from San Francisco sent to Nana's house to help Nana improve her English, though she turns out to be a complete slacker who does not really attempt to tutor Nana. It turns out that Nana's mother sent Honey to Japan so Honey would be able to confess her feelings to a boy she knows in Japan. During her visit, she discovers the secret of the seven Nanas, but promises to keep it a secret. Nana runs into her again in San Francisco, when it turns out she is Yuichi's host during his home stay program. Melody Honey is also a minor character in the anime Sgt. Frog and in Arcade Gamer Fubuki. Mary Lou - During Nana's trip to San Francisco, Honey assigned Mary, a little girl whom Honey babysits regularly, to Yuichi and Nana as part of the home stay program. Mary tried to use Nana's crystal, but she could only cause earthquakes. Billy - A fish mascot. It is usually seen as a fish pillow that Nanakko always carries. Billy also appears as other forms of merchandise, such as the keychain Nana gives Yuichi for Christmas. During Christmas, Nana even dressed up as Billy to avoid being recognized by classmates, her counselor, and the vice principal because it was against school policy for students to take on part-time jobs when they should be studying for entrance exams. DJ 623 (Mutsumi Hojo) - The host of the Examinee #623 radio show. He gives advice on various topics, including good luck charms and studying tips. When Nana and Hitomi run into him on the train to school, he was pleased