The Spirit Detective Saga is the first saga of the YuYu Hakusho series. It is divided into 5 story arcs: "Yusuke's Ordeal" (Manga: Vol. 1-3 (Chapters 1-18) Anime: Episodes 1-5) "Artifacts of Darkness" (Manga: Vol. 3 (Chapters 19-24) Anime: Episodes 5-8) "Genkai's Tournament" (Manga: Vol. 3-4 (Chapters 25-31) Anime: Episodes 9-13) "The Beasts of Maze Castle" (Manga: Vol. 4-5 (Chapters 32-44) Anime: Episodes 14-21) "Rescue Yukina" (Manga: Vol. 5-6 (Chapters 45-51) Anime: Episodes 22-25). During the anime, "Smile Bomb" is the opening theme with "The Homework Never Ends" as the closing theme.