IS: Infinite Stratos 2 - Hitonatsu no Omoide
Japanese title: 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
Alternative titles: IS: Infinite Stratos 2 Long Vacation Edition - The Memories of One Summer
Type: OVA
Source: Light novel
Episodes: 1
Status: Finished Airing
Aired: Oct 30, 2013
Duration: 39 min
Rating: PG-13 - Teens 13 or older
Studios: 8bit
Producers: Lantis
Licensors: Sentai Filmworks
Genres: Action, Comedy, Sci-Fi
Themes: Harem

An extended version of the second season's first episode, which is under the same title.