Adrena


"Adrena" is a song by Japanese duo Yoasobi. It was released as a single on January 4, 2026, through Echoes and Sony Music Entertainment Japan. The song serves as the opening theme for the 2026 anime series Hana-Kimi, and was based on Fuyu Tsuyama's short story Magical.

Background and release

first announced an anime adaptation of the manga series Hana-Kimi in May 2024. On September 14, 2025, at Aniplex Online Fest 2025, it was announced that Yoasobi would perform opening and ending themes for the anime series, set to premiere in January 2026. On November 8, the songs, alongside their titles—opening theme "Adrena" and ending theme "Baby"—and snippets, were revealed through the anime's promotional video.
On January 1, 2026, Yoasobi announced the release of "Adrena" for the next three days, the same day as the anime's premiere, via digital music and streaming platforms. Its cover artwork, illustrated by Naji Yanagida, features the anime protagonist Mizuki Ashiya. The limited double A-side CD single, alongside "Baby", is set to be released on March 4.

Composition and lyrics

Fuyu Tsuyama wrote the short story Magical specifically for "Adrena". Published on the Hana-Kimi anime's website on January 3, 2026, it depicts a prequel to Mizuki's feelings for her love interest, Izumi Sano, and her experiences at school since then. Lyrically, the song expresses the protagonist's exhilaration and confusion and "straightforward yet awkward" and unrelenting love, as she pursues her dream boy, driven by "up-tempo, comical sound, and dizzying developments".

Music video

An accompanying music video for "Adrena" premiered on January 6, 2026. Directed by Tsuribu Tokyo, who previously handled Yoasobi's "Players" music video, the comical 3D-animated visual features characters from Hana-Kimi, including protagonist Mizuki, who runs, flies, and passes each other amid a chaotic atmosphere.

Live performances

Yoasobi performed "Adrena" for the first time at Pentatonic music festival on January 24, 2026, at Yokohama Buntai.

Track listing

  1. "Adrena" – 3:05
  1. "Adrena" – 3:05
  2. "Baby" – 3:50
  3. "Adrena" – 3:05
  4. "Baby" – 3:50
  5. "Adrena" – 1:30
  6. "Baby" – 1:30
  7. "Adrena" – 3:05
  8. "Baby" – 3:50

Credits and personnel

  • Ayase – songwriting, arrangement, instruments
  • Ikura – vocals
  • Fuyu Tsuyama – based story writer