Home/Discover/Mysterious Girlfriend X: A Mysterious Summer FestivalMysterious Girlfriend X: A Mysterious Summer Festival謎の彼女X 謎の夏祭りMysterious Girlfriend X: A Mysterious Summer Festival2012 · OVA · 1 episodes▶ Watch episode 1+ My list OverviewEpisodesThe storyOVAOVA released with the 9th volume of the manga.PresentEarthJapanAsiaEcchiRomanceMysteryEpisodesChoose your next chapterEpisode titles follow your spoiler shield.Edit watched progress1Episode 126 min▶CharactersMeet the castAkira TsubakiMikoto UrabeTakaomi MatsubueAyuko OkaArika TogawaYouko TsubakiKouhei UenoMore in this worldRelated animeMysterious Girlfriend XTV · 2012