Sword Art Online (ソードアート・オンライン Sōdo Āto Onrain) is a Japanese light novel series written by Reki Kawahara and illustrated by abec. The series takes place in the near-future and focuses on various virtual reality MMORPG worlds. The light novels began publication on ASCII Media Works' Dengeki Bunko imprint from April 10, 2009, with a spin-off series launching in October 2012, and are licensed in North America by Yen Press. The series has spawned eight manga adaptations published by ASCII Media Works and Kadokawa.
  A television anime series produced by A-1 Pictures aired in Japan between July and December 2012. An Extra Edition episode aired on December 31, 2013, and a second anime series, titled Sword Art Online II, began airing in July 2014. A video game based on the series, Sword Art Online: Infinity Moment, was released on PlayStation Portable in March 2013, with a second game, Sword Art Online: Hollow Fragment for PlayStation Vita released in April 2014. The novels and three of the manga adaptations have been licensed for release by Yen Press.