Toradora! began as a series of light novels written by Yuyuko Takemiya and drawn by Yasu. Ten novels were published by ASCII Media Works under their "Dengeki Bunko" in-print between March 10, 2006 and March 10, 2009. There are four additional chapters not collected into volumes, three of which appeared in three separate light novel anthologies released by the MediaWorks in November 2006, March 2007, and November 2007; the last chapter entitled "Toradora!" came with a plush tiger stuffed animal and was first released in April 2007.
Three volumes of a spin-off series under the title "Toradora Spin-off!" (とらドラ・スピンフ!) were also created. The first volume of the spin-off series was released on May 10, 2007 and compiled four chapters, three of which had been serialized in MediaWorks' now-defunct light novel magazine "Dengeki hp" between June 10, 2006 and February 10, 2007. The last chapter was written especially for the volume release.
A single chapter of the spin-off series, originally published in February 2006 in "Dengeki hp" was included in the second volume of the regular novel series. More chapters started serialization in Dengeki hp's successor "Dengeki Bunko Magazine" on December 10, 2007. Additional chapters of the main series started serialization in the same magazine on April 10, 2008. The second volume of "Toradora Spin-off!" was released on January 10, 2009 followed by the third volume on April 10, 2010. The third volume was released to commemorate the Year of the Tiger (2010).