The story centers around Marimo Nogami, a usually quiet fourth-grade girl in elementary school. However, a certain incident leads to Marimo's personal strength blossoming.
| Directing | Akitoshi Yokoyama | Director |
| Visual Effects | Junko Yamanaka | Character Designer |
| Sound | Yota Tsuruoka | Sound Director |
| Editing | Hitomi Sudo | Editor |
| Writing | Kunihiko Okada | Screenplay |
| Visual Effects | Hironori Tanaka | Key Animation |
| Visual Effects | Hisashi Mori | Key Animation |
| Sound | Satoshi Yano | Sound Recordist |
| Sound | Hiromitsu Iijima | Music Producer |
| Visual Effects | Kenichi Fujisawa | Key Animation |
| Visual Effects | Yuuko Yoshida | Key Animation |
| Visual Effects | Yukiko Furusawa | Key Animation |
| Visual Effects | Tetsuro Moronuki | Key Animation |
| Visual Effects | Taiichi Hashimoto | Key Animation |
| Visual Effects | Shoko Nishigaki | Key Animation |
| Visual Effects | Makiko Kaneda | Key Animation |
| Visual Effects | Akiko Matsuo | Key Animation |
| Visual Effects | Akitoshi Yokoyama | Key Animation |
| Visual Effects | Chiori Haneda | Key Animation |
| Visual Effects | Eri Akazawa | Key Animation |
| Visual Effects | Hirotaka Nii | Key Animation |
| Visual Effects | Junko Yamanaka | Key Animation |
| Visual Effects | Katsunori Kikuchi | Key Animation |