Young Samurai: The Way of the Sword Germany, Vietnam, Poland, Netherlands and Serbia. The first book, "The Way of the Warrior", was published in the UK in August 2008 and in the USA in early March 2009. The first print run in the UK sold out in less than a month. As of 2017,"The Way of the Warrior" has been reprinted 26 times. Seven further books followed, with a ninth - "The Return of the Warrior" - being published for the series' tenth anniversary in 2018. The series has sold in excess of 1 million copies worldwide. Young Samurai: The Way of the Sword Young Samurai: The
Sword Art Online go "back to the real world." The Unital Ring story arc began in volume 21, which was released in Japan on December 7, 2018. Kawahara also writes the "Sword Art Online: Progressive" series, which covers Kirito's adventures on the first few floors of Aincrad. The first volume of "Progressive" was released on October 10, 2012, and four volumes have been released as of December 10, 2015. The first volume of a light novel series based on "Sword Art Online" titled "Sword Art Online Alternative Gun Gale Online", written by Keiichi Sigsawa with illustrations by Kouhaku Kuroboshi, was published by ASCII