In the last chapter of the Refrain Blue series, the bond between Yoshihiro Matsunaga and Nao Morisawa grows stronger, while Yoshihiro finally finds out the identify of the mysterious girl from the first chapter.
| Camera | Takashi Azuhata | Director of Photography |
| Directing | Norio Kajima | Director |
| Production | Saburou Oomiya | Producer |
| Sound | Kouichi Iizuka | Sound Director |
| Sound | Hikari Okamoto | Theme Song Performance |
| Visual Effects | Mayumi Watanabe | Character Designer |
| Visual Effects | Mayumi Watanabe | Animation Director |
| Writing | Takawo Yoshioka | Screenplay |
