Nagi Rokuya is a member of the idol group IDOLiSH7, recognized for his striking blond hair, blue eyes, and a self-described image of being sexy and elegant. His strikingly good looks and natural charisma make him a compelling presence, and he is often seen playfully flirting with women. Underneath this glamorous exterior, however, Nagi experienced a lonely childhood, having grown up without many friends due to his unusual background and appearance. This past has made him deeply value the connections he has formed as part of IDOLiSH7, and he cherishes his fellow members intensely. Nagi is a devoted enthusiast of Japanese pop culture and anime, and his personal space is filled with figures and related merchandise. He often functions as a peacemaker within the group, working to resolve conflicts and maintain harmony. Nagi was born in the fictional country of Northmeir, and his full name is Nagi Valhart von Northmeir, the second prince of the nation. His mother was Japanese. He originally traveled to Japan with the specific purpose of delivering a collection of songs composed by Haruki Sakura to Takanashi Productions. While walking near the agency, he was scouted by Otoharu Takanashi, which led to his debut as an idol. In the story, Nagi serves as an enthusiastic and loyal member of IDOLiSH7, bringing both his charming stage presence and his deep affection for the group to every performance. His key relationships are defined by his strong bonds with each of his teammates, whom he openly loves and actively tries to support. His development is shown as he learns to navigate the responsibilities of being an idol and opens up more about his royal heritage and past. Nagi possesses several notable abilities beyond his visual appeal. He is capable of speaking eight languages, including Northmarean, English, German, Norwegian, French, Italian, Japanese, and Chinese. He is also physically capable in a fight and displays a natural, if sometimes awkward, approach to daily life, having never prepared food before moving into the dormitory. His love for anime leads to personal quirks, such as a strong desire to attend anime events for limited merchandise, and he has a notable fear of ghost stories.