The world is split across three planes — Living World, Soul Society, and Hueco Mundo — governed by parallel bureaucracies. The Gotei 13, the Central 46, and the Royal Guard sit above the visible plot for most of the series.

• Substitute Soul Reaper — Ichigo learns what he is, meets the Soul Society's rules, and picks up his first real fight.
• Soul Society — A rescue mission turns into a coup. The Gotei 13 is introduced properly, and Aizen's betrayal reframes the entire series.
• Arrancar / Hueco Mundo — The Espada arrive and the war moves into Aizen's territory.

The Five Great Shinobi Nations are city-states built around hidden villages that sell ninja services like a defense industry. Wars are hot for months and cold for decades, and every treaty rests on the strength of a handful of kage-tier fighters. Bloodline persecution, orphaned child soldiers, and the moral bankruptcy of village elders shape the political spine of the series.

• Land of Waves — Team 7's first real mission introduces stakes, sacrifice, and the shape of the ninja world through Zabuza and Haku.
• Chunin Exams — A tournament arc that turns political when Orochimaru infiltrates Konoha and marks Sasuke, planting the seeds of every future conflict.
• Konoha Crush — The Third Hokage falls, Sunagakure betrays the alliance, and Naruto proves he can stand beside monsters like Gaara.

The world is 90% unexplored. Continents, oceans, and even categories of life have not been catalogued. Hunters are the licensed adventurers who chase what remains. This is a series where the map itself is a mystery.

• Hunter Exam — A tournament arc that is really an introduction to the moral rules of the world.
• Heavens Arena — Nen, Hisoka, and the moment the show pivots into a power system.
• Yorknew City — The Phantom Troupe arc. Auction politics, assassinations, and a Kurapika who finally moves.

Hero work is a regulated industry. U.A. is one of several hero schools, and the Hero Public Safety Commission runs licensing, rankings, and the political fallout when a top hero falls.

• U.A. Sports Festival — The show's version of a tournament arc, used less for winners than for defining every student's public identity.
• Hideout Raid — The League of Villains rescue that removes All Might from the board and reshapes the series.
• Overhaul — The yakuza arc — a darker, more contained story with lasting consequences for Deku and Mirio.