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.
小西克幸
as Yoshihiro Matsunaga (voice)
菊地由美
as Nao Morisawa (voice)
石川静
as Chinatsu Iwasaki (voice)
安達まり
as Tsugumi Tsugashima (voice)
浅野るり
as Yuori Kawana (voice)
園崎未恵
as Mikage / Mysterious Girl (voice)
内川藍維
as Shizuka Hayase (voice)
岸尾だいすけ
as Ryouji Itou (voice)
