The first chapter of the Refrain Blue series, tells about the recollection of Yoshihiro's past about various events of summer school, of the fate where encounter and separation are interwoven with each other, as Yoshiro and Matsunaga will pass the Toyo Gakuen and will arrive at summer school at seashore. A mysterious girl smiles as she watches Yoshiro who stands still at the seashore dusk.
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| Writing | Takawo Yoshioka | Screenplay |
| Sound | Kouichi Iizuka | Sound Director |
| Sound | Hikari Okamoto | Theme Song Performance |
| Directing | Norio Kajima | Director |
| Production | Saburou Oomiya | Producer |
| Visual Effects | Mayumi Watanabe | Character Designer |
| Camera | Takashi Azuhata | Director of Photography |
| Visual Effects | Mayumi Watanabe | Animation Director |
