Ichiro Sakaki is a Japanese novelist, light novel author, and screenwriter known for creating numerous works that have been adapted into anime and manga. Born on November 23, 1969, in Osaka Prefecture, Sakaki is a graduate of the Faculty of Law at Osaka University. He made his professional debut in 1998 after his submission, Dragon's Will, won the ninth Fujimi Fantasia Long Novel Prize.

Sakaki is widely recognized as an exceptionally prolific writer, often referred to by fans as a "human printing press" or "light novel house" due to his high output. His second major work, Scrapped Princess, became a significant commercial success, with cumulative sales exceeding one million copies and firmly establishing his reputation in the industry. This success was followed by the creation of several other long-running series.

Among his notable original works is the light novel series Chaika - The Coffin Princess, which he wrote with illustrations by Namaniku ATK. The series was published by Fujimi Shobo under their Fujimi Fantasia Bunko imprint from December 2010 to March 2015. It was adapted into a manga and a two-season anime television series produced by the studio Bones, which aired in 2014. Sakaki is also credited as the creator behind the Magician's Academy franchise, which originated as a light novel series and later inspired an anime adaptation.

Sakaki's involvement with the Polyphonica franchise demonstrates his range as a creator. He co-wrote the original Shinkyoku Sōkai Polyphonica visual novel software and authored the Shinkyoku Sōkai Polyphonica crimson S light novel adaptation. When the first Polyphonica anime was produced, Sakaki took on the roles of series composition and scriptwriting, marking his entry into direct work on anime productions. He continued to work on the sequel series, Polyphonica Crimson S. His other anime credits include the original work and series composition for the OVA Strait Jacket, based on his own novel series, as well as scriptwriting for the Devil May Cry anime. He also served as the original creator and series composer for the anime CODE-E and its sequel MISSION-E.

Beyond his writing, Sakaki has been involved in nurturing new talent as a lecturer at the Osaka Animation School and has co-founded the creative group IMAGING FOREST to provide original concepts for various media. His long and varied career has seen him publish across a vast number of imprints, from Fujimi Fantasia Bunko to MF Bunko J, and his works have been released internationally in multiple languages. Through his significant contributions to light novels and his active role in adapting his stories for television, Sakaki has established himself as a central and enduring figure in the industry.