OVA released with the 9th volume of the manga.
Mysterious Girlfriend X: A Mysterious Summer Festival is finished and has 1 Episodes. It is also Known as: 謎の彼女X 謎の夏祭り, Nazo no Kanojo X: Nazo no Natsu Matsuri
Genres: Japan, Earth, Asia, Present, Ecchi, Romance, Mystery
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