12-year-old Oriko Seki, who lost her parents in a car accident, ended up living in her grandmother's Onsen Ryokan "Haru no Ya." With the ghost "Uribou" cohabitating with her and all the other odds, she ended up training to be a young female innkeeper. At first, she didn't like the training, but gradually felt her admiration for her title and began to train seriously. Thus, the growth of the young warrior Oriko begins.
Unfortunately the movie Okko's Inn is not yet available on HBO Max.
| Art | Kosuke Hayashi | Background Designer |
| Art | Youichi Watanabe | Art Direction |
| Visual Effects | Hiroko Minowa | Key Animation |
| Visual Effects | Kumiko Kawana | Key Animation |
| Sound | Sayaka Ninomiya | Sound Mixer |
| Sound | Shizuo Kurahashi | Sound Effects |
| Sound | Sachiko Nishi | Sound Effects |
| Sound | Masafumi Mima | Sound Director |
| Camera | Michiya Kato | Director of Photography |
| Sound | Keiichi Suzuki | Original Music Composer |
| Visual Effects | Terumi Nakauchi | Color Designer |
| Visual Effects | Shoko Nagasawa | Key Animation |
| Visual Effects | Shinji Otsuka | Key Animation |
| Visual Effects | Takeshi Honda | Key Animation |
| Editing | Kashiko Kimura | Editor |
| Writing | Asami | Comic Book |
| Writing | Hiroko Reijou | Comic Book |
| Directing | Kitaro Kosaka | Director |
| Visual Effects | Shunsuke Hirota | Animation Director |
| Writing | Reiko Yoshida | Screenplay |
| Editing | Takeshi Seyama | Editor |
