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 |
| Visual Effects | Terumi Nakauchi | Color Designer |
| Sound | Sayaka Ninomiya | Sound Mixer |
| Camera | Michiya Kato | Director of Photography |
| Sound | Sachiko Nishi | Sound Effects |
| Sound | Keiichi Suzuki | Original Music Composer |
| Sound | Masafumi Mima | Sound Director |
| Sound | Shizuo Kurahashi | Sound Effects |
| Visual Effects | Shoko Nagasawa | Key Animation |
| Visual Effects | Takeshi Honda | Key Animation |
| Visual Effects | Shinji Otsuka | Key Animation |
| Editing | Kashiko Kimura | Editor |
| Writing | Asami | Comic Book |
| Directing | Kitaro Kosaka | Director |
| Visual Effects | Shunsuke Hirota | Animation Director |
| Writing | Reiko Yoshida | Screenplay |
| Writing | Hiroko Reijou | Comic Book |
| Editing | Takeshi Seyama | Editor |
