Tags: Manga.
Mysterious Girlfriend X (謎の彼女X Nazo no Kanojo Ekkusu) is an ongoing 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 Afternoon magazine in 2006. An anime adaptation by Hoods Entertainment aired in Japan from April 7 2012 to June 30 2012 with an original video animation episode released on August 23 2012.