Recap of the Aoki Hagane no Arpeggio: Ars Nova TV series, with approximately 40 minutes of new material. By 2039, global warming had caused sea levels to rise and large amount of territory to be lost. As though in response, a mysterious group of warships clad in mist, "the Fleet of Mist," appeared in every corner of the ocean, and began attacking human ships. In spite of humanity mustering all their strength, they were utterly defeated by the Mist's overwhelming force. All of humanity's trade routes were blockaded by the Fleet of Mist, their political economy was destroyed, and the human race was steadily beaten down. Seven years later, the Fleet of Mist's submarine I-401 appears before cadet Gunzo Chihaya. The humanoid life form that pilots the sub, who should be their enemy, is instead offering her services to mankind.
| Directing | Seiji Kishi | Director |
| Writing | Ark Performance | Original Series Creator |
| Directing | Kohdai Kakimoto | Assistant Director |
| Visual Effects | Kazuaki Morita | Character Designer |
| Visual Effects | Takehiko Matsumoto | Mechanical Designer |
| Sound | Satoki Iida | Sound Director |
| Editing | Kiyoshi Hirose | Editor |
| Art | Ayumi Miyakoshi | Art Designer |
| Camera | Daisuke Okumura | Director of Photography |
| Writing | Chabo Higurashi | Screenplay |
| Writing | Shigeru Morita | Screenplay |
| Writing | Koujirou Nakamura | Screenplay |
| Writing | Makoto Uezu | Screenplay |
| Visual Effects | Daisuke Suzuki | Animation Director |
| Sound | Mai Fuchigami | Theme Song Performance |
| Sound | Manami Numakura | Theme Song Performance |
| Sound | Hibiku Yamamura | Theme Song Performance |
| Writing | Heart's Cry | Lyricist |
| Sound | Nano | Theme Song Performance |
| Writing | Nano | Lyricist |
| Sound | Saki Fujita | Theme Song Performance |
| Writing | Yuya Saito | Lyricist |
| Sound | Masato Kouda | Original Music Composer |
