An extended version of the second season's first episode, which is under the same title.[Written by MAL Rewrite]
IS: Infinite Stratos 2 - Hitonatsu no Omoide, IS: Infinite Stratos 2 Long Vacation Edition - The Memories of One Summer, IS 〈インフィニット・ストラトス〉2 ロングバケーション 一夏(ひとなつ)の想いで
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