Akari finds herself nervous coaching a new undine as a Prima, until she awakens to find that it is just a dream. To soothe her worries, Alicia recalls stories of her beginnings as a Prima, as well as the memories she made.
Unfortunately the movie Aria the OVA: Arietta is not yet available on HBO Max.
| Visual Effects | Tomohiro Nishiyama | Compositing Artist |
| Visual Effects | Kazuhiro Udagawa | Compositing Artist |
| Writing | Kozue Amano | Comic Book |
| Art | Kazutaka Tanimoto | Background Designer |
| Editing | Kentaro Tsubone | Editor |
| Visual Effects | Hiroyuki Kaidou | Animation Director |
| Visual Effects | Masatsugu Arakawa | Key Animation |
| Visual Effects | Mitsuhiro Iwasaki | Key Animation |
| Visual Effects | Megumi Kadonosono | Key Animation |
| Visual Effects | Yukihiro Kobayashi | Key Animation |
| Visual Effects | Ryou Komori | Key Animation |
| Visual Effects | Hiroshi Konno | Key Animation |
| Visual Effects | Hideki Saijo | Key Animation |
| Visual Effects | Ryousuke Tanigawa | Key Animation |
| Visual Effects | Tatsufumi Itoh | Key Animation |
| Visual Effects | Masahiko Nakada | Key Animation |
| Visual Effects | Terumi Nishii | Key Animation |
| Visual Effects | Koichi Hayami | Key Animation |
| Visual Effects | Yasuko Higuchi | Key Animation |
| Visual Effects | Takaaki Hirayama | Key Animation |
| Visual Effects | Miki Yoshikawa | Key Animation |
| Visual Effects | Yukiko Miyamoto | Key Animation |
| Visual Effects | Ayako Mori | Key Animation |
| Visual Effects | Masashi Wakayama | Key Animation |
| Visual Effects | Takaaki Wada | Key Animation |
| Art | Toshiaki Mitsunaka | Background Designer |
| Art | Hiromi Yano | Background Designer |
| Art | Natsumi Ueno | Background Designer |
| Art | Osamu Tayama | Background Designer |
| Art | Asuka Komiyama | Background Designer |
| Crew | Takatoshi Abe | Special Effects |
| Crew | Tomomi Ishihara | Special Effects |
| Visual Effects | Shinji Ikegami | Compositing Artist |
| Visual Effects | Koichi Gonda | Compositing Artist |
| Visual Effects | Yuko Orikasa | Compositing Artist |
| Visual Effects | Yumiko Morimoto | Compositing Artist |
| Visual Effects | Toru Sugawara | Compositing Artist |
| Visual Effects | Fujiko Tabata | Compositing Artist |
| Visual Effects | Masato Ando | Compositing Artist |
| Visual Effects | Shu Sugai | Compositing Artist |
| Visual Effects | Yurie Tadano | Compositing Artist |
| Visual Effects | Kazuki Hashimoto | Compositing Artist |
| Visual Effects | Naohisa Haishima | Compositing Artist |
| Production | Nobue Yoshinaga | Casting |
| Visual Effects | Kaoru Matsumoto | 3D Artist |
| Art | Masaki Yoshikawa | Background Designer |
| Sound | Eri Kawai | Vocals |
| Directing | Junichi Sato | Director |
| Writing | Junichi Sato | Screenplay |
| Editing | Emi Maruo | Online Editor |
| Editing | Kazunori Okuda | Online Editor |
| Visual Effects | Thomas Romain | Layout Supervisor |
| Directing | Kenichi Takeshita | Second Unit Director |
| Sound | Kimitaka Kawasaki | Sound Mixer |
| Production | Motomasa Maeda | Additional Production Assistant |
| Production | Masatoyo Takada | Production Assistant |
| Sound | Erino Hazuki | Theme Song Performance |
| Sound | SONOROUS | Theme Song Performance |
| Visual Effects | Makoto Koga | Character Designer |
| Visual Effects | Yoshimi Kawakami | Color Designer |
| Sound | Choro Club | Musician |
| Sound | Choro Club | Original Music Composer |
| Sound | Takeshi Senoo | Musician |
| Sound | Takeshi Senoo | Original Music Composer |
| Camera | Hiroshi Yoshida | Director of Photography |
| Sound | Toshiya Wada | Sound Effects |
| Sound | Masao Fukuda | Music Producer |
| Production | Shinsaku Hatta | Producer |
| Production | Toshiaki Asaka | Producer |
| Production | Toshio Iizuka | Producer |
| Art | Junichi Sato | Storyboard Artist |
| Art | Hiroshi Yoshikawa | Art Direction |
| Production | Tetsuo Uchida | Producer |
| Sound | Eri Kawai | Songs |
| Production | Yasuhiro Mikami | Producer |
