Kingdom Hearts is based on Square's Playstation 2 video game of the same title. The series was reprinted in three volumes as Kingdom Hearts: Final Mix with additional chapters.
The series was first published in English by Tokyopop from October 11, 2005 to July 11, 2006. Yen Press re-published the series as Kingdom Hearts: Final Mix in two omnibus volumes based on the three volume reprint on May 28, 2013.