Section 4: Duelist Kingdom arc (第（だい）四章（しょう） 決闘者（デュエリスト）の王（おう）国（こく）編（へん） Daiyonshō Dyuerisuto no Ōkoku-hen) is a story arc in the Yu-Gi-Oh! manga. Maximillion J. Pegasus forces Yugi Mutou to participate in the Duelist Kingdom tournament. Yugi is accompanied by his friends, including Katsuya Jonouchi, who participates for the prize money to pay for an eye operation for his sister, Shizuka Kawai.