Yesterday wo Utatte EX – Genten wo Tazurete Toume Kei Shoki TanpenshuuイエスタデイをうたってEX ～原点を訪ねて 冬目景 初期短編集～ ; サイレンの棲む海 ; Sing

A special volume containing background/design information on the main series, some extra side stories, as well as some early works by Kei Toume.The Sea Where the Siren Lives:"In the city by the sea, we understood that we could never understand each other."Related:Yesterday wo Utatte:http://mangapark.com/search?q=yesterday-wo-utatte