Mysterious Girlfriend X

Mysterious Girlfriend X
Cover of the first manga volume
謎の彼女X
(Nazo no Kanojo Ekkusu)
GenreRomantic comedy
Manga
Written byRiichi Ueshiba
Published byKodansha
English publisher
ImprintAfternoon KC
MagazineMonthly Afternoon
DemographicSeinen
Original runMarch 25, 2006September 25, 2014
Volumes12
Anime television series
Directed byAyumu Watanabe
Written byDeko Akao
Music byTomoki Hasegawa
StudioHoods Entertainment
Licensed by
Original networkTokyo MX, AT-X
English networkAnime Network
Original run April 7, 2012 June 30, 2012
Episodes13
Original video animation
Directed byAyumu Watanabe
Written byDeko Akao
StudioHoods Entertainment
Licensed by
ReleasedAugust 23, 2012
Runtime26 minutes

Mysterious Girlfriend X (Japanese: 謎の彼女X, Hepburn: Nazo no Kanojo Ekkusu) is a Japanese manga written and illustrated by Riichi Ueshiba. It was originally published as a one-shot story in 2004 before becoming a serialized comic in Kodansha's seinen manga magazine Monthly Afternoon from March 2006 to September 2014, with its chapters collected in 12 tankōbon volumes. The manga is licensed in North America by Vertical. The series follows a boy named Akira Tsubaki who knows next to nothing about girls, along with a new transfer student Mikoto Urabe, a mysterious girl who wears a cold facade, their first encounter takes a turn for the romantic.

An anime adaptation by Hoods Entertainment aired in Japan from April to June 2012, with an original video animation episode released in August 2012. The series is licensed by Sentai Filmworks in North America through Section23 Films for home video and streaming via HIDIVE.