High☆Speed! (ハイ☆スピード!, Hai☆Supīdo!) is a novel written by Kōji Ōji and is the original concept of the anime Free!, which obtained an "Honorable Mention" from the Kyoto Animation Awards 2011. The second volume of High☆Speed! is said to be published on July 2, 2014.
The novel participated in the Kyoto Animation Awards 2011, where it received second place in the novel category and an "Honorable Mention". The anime Free! was later created, based on this novel.
High☆Speed! will be published on 8 July 2013 at the KA Esuma Library. The book is illustrated by Futoshi Nishiya, who is also responsible for the character design of the anime.