Kyoto in het jaar 2027. Centraal staan Naomi Katagaki en Ruri Ichigyou, die in het verleden klasgenoten waren. Nu besluit Naomi terug in de tijd te reizen, naar zo'n decennium geleden. Hij wil namelijk een foute beslissing, gemaakt tijdens zijn studieperiode, rechtzetten.
Nee, helaas is HELLO WORLD nog niet beschikbaar op Netflix in Nederland.
| Visual Effects | 鈴木政彦 | Key Animation |
| Sound | 楢﨑誠 | Theme Song Performance |
| Sound | 松浦匡希 | Theme Song Performance |
| Sound | 藤原聡 | Theme Song Performance |
| Sound | 小笹大輔 | Theme Song Performance |
| Sound | 岩浪美和 | Sound Director |
| Art | 伊藤智彦 | Storyboard Artist |
| Art | 竹田悠介 | Art Direction |
| Writing | 野﨑まど | Screenplay |
| Camera | 小畑芳樹 | Director of Photography |
| Art | Kenji Muto | Storyboard Artist |
| Visual Effects | 稲吉智重 | Key Animation |
| Art | 細田直人 | Storyboard Artist |
| Sound | 小山恭正 | Sound Effects |
| Sound | 山口貴之 | Sound Mixer |
| Art | 出合小都美 | Storyboard Artist |
| Sound | STUTS | Music |
| Directing | Daisuke Shimamura | Layout |
| Visual Effects | 森友宏樹 | Key Animation |
| Visual Effects | 國光奈々 | Key Animation |
| Visual Effects | 荒木一成 | Key Animation |
| Directing | 伊藤智彦 | Director |
| Visual Effects | 堀口悠紀子 | Character Designer |
| Sound | 2027Sound | Original Music Composer |
| Sound | 小島裕規 | Original Music Composer |
