Yu Yu Hakusho season 4

The fourth and final season of the Yu Yu Hakusho anime series, known as the Saga of the Three Kings, was directed Noriyuki Abe and produced by Fuji Television, Yomiko Advertising and Studio Pierrot. The episodes were released in North America by Funimation. It adapts Yoshihiro Togashi's Yu Yu Hakusho manga series by Yoshihiro Togashi from the seventeenth through nineteenth volumes over eighteen episodes. The episodes cover Yusuke Urameshi's journey to Makai to meet his demon ancestor, and his attempts to resolve the unstable political situation in Makai.

The season initially ran from August 20 to December 17, 1994, on Fuji Television in Japan. The English episodes were shown from December 2005 to April 2006 on Cartoon Network's Toonami programming block.

Three pieces of theme music are used for the episodes; one opening theme and two closing themes. The opening theme is "Hohoemi no Bakudan" (微笑みの爆弾) by Matsuko Mawatari. The closing themes are "Taiyō ga Mata Kagayaku Toki" (太陽がまた輝くとき) by Hiro Takahashi, used for the first eight episodes, and Mawatari's "Daydream Generation" for all remaining episodes except episode 112, which uses "Hohoemi no Bakudan" as the closing theme.

Six DVD compilations, each containing three episodes of the saga, have been released by Funimation. The first compilation was released on November 23, 2004, and the sixth compilation was released on July 19, 2005. A DVD collection box, containing all six compilations of the saga, was released by Funimation on March 7, 2006. A Blu-ray compilation was released by Funimation on November 29, 2011.