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Nazuna (Japanese: ナズナ Nazuna) is a character in the Phantom Thief Pokémon 7 manga. She can be a bit thickheaded and stubborn when she finds a letter for Pokémon Seven and interferes and ends up a hostage during a crime. She is in love with Pokémon 7 who is in reality Hiori. Not knowing his identity, she is rude and mean to him sometimes. She is the daughter of the owner of the "Sun Sun" bakery where she and Hiori both work.
Nazuna first appears in the bakery Sun Sun when some customers talk about the mysterious Pokémon thief, Pokémon Seven. While she and Hiori talk about him, some kids arrive and challenges the two of them to a Pokémon battle which she accepts and drags Hiori along. After Hiori is defeated in the battle, Nazuna becomes angry with his nonchalant attitude and tells him that he should act more like Pokémon Seven.
Later, she witnesses Pokémon Seven fly out of Hiori's house and follows him to the house of a watch stealer. She is captured by the watch stealer and is rescued by Hiori and gains a new sort of respect for Pokémon Seven in the process. It is soon revealed that Nazuna has gained a crush on Pokémon Seven, much to Hiori's shock, and starts calling him "Master Seven".
Sometime later, after Hiori manages to successfully rescue his missing sister, Lily, from Team Galactic's mind control, she is taken to Sun Sun to get some rest. After Lily wakes up from her sleep, two Galactic Grunts attack the bakery looking for Pokémon Seven and Lily. Nazuna and her father try to protect the bakery and almost succeed until the grunts attack the bakery itself, forcing her father to get himself injured by jumping in front of the attack. Hiori then steps in, defeats the grunts, and reveals his secret identity to Nazuna before heading out to stop Team Galactic's plan to cover the world in darkness.
In the finale, Nazuna is seen reading a newspaper that reveals that Hiori, Rocco, and Lily are all alive after going missing after they defeated Team Galactic.