Riichi Ueshiba

is a Japanese manga artist. He has written and illustrated Yume Tsukai and Mysterious Girlfriend X, both of which were adapted into anime series. Another of his works, Discommunication, had its main characters animated in the 14th OVA episode of Mysterious Girlfriend X as a cameo appearance.

Mysterious Girlfriend X is licensed in North America by Vertical. Discommunication has been licensed by J-Novel Club and is being released in English digitally.

Works (1991–1999, serialized in Monthly Afternoon, Kodansha) (1996–1997, serialized in Monthly Afternoon, Kodansha) (1999–2000, serialized in Monthly Afternoon, Kodansha) (2001–2003, serialized in Monthly Afternoon, Kodansha) (2004–2014, serialized in Monthly Afternoon, Kodansha) (2017–2020, serialized in Monthly Afternoon, Kodansha)