Jack has moved to Hokkaido to get treatment for an illness, but he's lonely and unhappy. One night a man on a horse rides through his window to help him. For a reason he doesn't understand, Jack instantly knows the man's name and feels they've met somewhere before. The man, Cu Chulainn, tells Jack to open the moonlight shadow window, which leads him to Nymphidia, the world of Midsummer Night's Dream, whose inhabitants are waiting for a new Fairy King.
Unfortunately the movie Fairy King is not yet available on HBO Max.
| Art | Kazuo Oga | Background Designer |
| Directing | Katsuhisa Yamada | Director |
| Art | Satoshi Matsuoka | Art Direction |
| Sound | Yuriko Nakamura | Music |
| Sound | Yasunori Honda | Sound Director |
| Art | Yoshinori Hirose | Background Designer |
| Production | Masao Maruyama | Producer |
| Writing | Tomoko Konparu | Screenplay |
| Production | Ryuzo Shirakawa | Producer |
| Production | Haruki Kadokawa | Producer |
| Production | Noriaki Ikeda | Producer |
