"Nina" (stylized in lowercase) is a song by Japanese singer and voice actress Maaya Sakamoto. Co-written by Sakamoto and Yà «suke Shirato, the song served as the opening theme for the television anime series Nina the Starry Bride. It was released as a digital single on October 10, 2024, and on physical formats on November 6 of the same year, by FlyingDog.
"Nina" was specifically written for Nina the Starry Bride, a fantasy anime centered on an orphan named Nina who assumes the identity of a deceased princess. Production began approximately a year prior to its release, when Sakamoto was commissioned to provide the theme song for the series. Reading the Nina manga and hearing the directorâÂÂs request for a "bright and energetic" song, Sakamoto began envisioning a song reminiscent of her 2009 single "Magic Number." The song also marks the first collaboration between Sakamoto and Yà «suke Shirato, known for works like "Sekai ni wa Ai Shika Nai" by Keyakizaka46 (now Sakurazaka46) and The Idolmaster series. Sakamoto described their collaboration as surprisingly seamless, relaxed and familiar creative process, despite it being their first time working together.
Sakamoto explained her decision for naming the song after the anime protagonist by stating: "I felt that it was very important for her to be called by her true name, so in keeping with that sentiment, I titled the theme song 'Nina' as well." She declared this decision felt like a fresh, almost retro nod to classic anime songs, a move she had not previously made in her tie-in works.
The song was first announced in July 2024, along with details of the anime.
The physical single of "Nina" was released on November 6, 2025, on two formats: regular and limited edition, the latter including a Blu-ray with live footage of three songs from SakamotoâÂÂs performance at the Kyoto Music Expo 2023 in Umenomichi Park, including a notable collaboration with Shigeru Kishida of Quruli on the song "Sumire". The single includes the b-side "Sekai no Himitsu," which features lyrics by Yumi Uchimura of the rock band La La Larks, and was composed and arranged by Swedish producer Rasmus Faber, reuniting with Sakamoto for the first time since their collaboration on "Waiting for the Rain" nine years prior.
"Nina" was created to capture the essence of the animeâÂÂs protagonist, who is depicted as a character determined to shape her own future despite being swayed by fate. Sakamoto described the song as one that inspires listeners to "hold their head high and move forward," aiming to evoke a sense of empowerment and resilience. Sakamoto explained that crafting such a straightforwardly positive song required balancing the expectations with her perspective as a 44-year-old artist, avoiding a forced tone. She commented: "Expressing such straightforward brightness and positivity through lyrics and sound is something that comes from the anime itself. IâÂÂve always sensed that longtime fans expect this kind of song from me [...] but that kind of vibrancy does not come easily from my everyday life." Thus, Sakamoto aimed for a gentler approach in "Nina," shifting from the traditional approach to uplifting songs with themes such as âÂÂpush harder!â or âÂÂyou can do more!âÂÂ, to more gentler messages like âÂÂthis moment is not everything, and mistakes are not the end,â reflecting a mature evolution in her approach to this type of song.
The music video, directed by Yasuyuki Yamaguchi, was published on YouTube on October 10, 2025. The music videoâÂÂs concept centers on a car and motorcycle chase exploring SakamotoâÂÂs identity, featuring intense car battle scenes with a stylish and tense atmosphere.
"Nina" debuted at number 11 on the Oricon Weekly Singles Chart, selling 3,743 copies on its first week. The single charted for three weeks, with reported sales totaling 4,604 copies.
Credits adapted from the liner notes of the CD single.