OVA that is based on a manga simply titled Mumako (literally “Dream Devil Child”) written by Fujiko Fujio A.
| Crew | Umino Kaoru | Script |
| Production | Kodama Seitarou | Producer |
| Directing | Kuni Toshirou | Director |
| Art | Koga Tooru | Art Direction |
| Writing | Umino Kaoru | Screenplay |
| Sound | Kouhei Tanaka | Music |
| Writing | Fujiko A. Fujio | Writer |
| Visual Effects | Nobuhiro Okasako | Animation Director |