Season 1: Spirit Detective Saga
The episodes of the first season of the series, known as the Spirit Detective Saga, adapt the first through sixth volumes of the manga by Yoshihiro Togashi over twenty-five episodes. The episodes cover the first adventures of Yusuke Urameshi as a Spirit Detective after his return to life.
Season 2: Dark Tournament Saga
The episodes cover the story of Yusuke Urameshi and how his tenure as Spirit Detective led him to participate in the "Dark Tournament," a competition between demons to determine the strongest supernatural inhabitants of the Living World.
Season 3: Chapter Black Saga
The third season of the YuYu Hakusho anime, called the Chapter Black Saga, spans thirty-seven episodes, which correlate to the thirteenth through seventeenth volumes of the YuYu Hakusho manga. The episodes follow Spirit Detective Yusuke Urameshi and his conflict with a former Spirit Detective, Shinobu Sensui, and the latter's desire to open the gateway to Makai.
Season 4: Saga of the Three Kings
The episodes of the final season of the YuYu Hakusho anime, known as the Saga of the Three Kings, adapt the seventeenth through nineteenth volumes of the YuYu Hakusho manga over seventeen 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.