Tournament Saga

Goku trains under Master Roshi and enters the World Martial Arts Tournament, facing powerful fighters and beginning his lifelong rivalry with Krillin.

The Tournament arc introduces the World Martial Arts Tournament as a recurring structural element of Dragon Ball, providing the series with a competitive framework that organizes its power-scaling, introduces rivals, and gives Goku a concrete metric for his growth as a martial artist. Following his initial adventures with Bulma, Goku travels to Master Roshi's island seeking martial arts training, joined by Krillin — an ambitious student from a martial arts temple who initially views Goku as competition before becoming his closest friend. Master Roshi's training methods are unorthodox and often comedic: milk delivery runs, agricultural labor, and weighted physical conditioning that pushes both students to their limits while Roshi poses as an elderly eccentric whose true power remains carefully concealed. The tournament itself brings together fighters from across the world, each representing different martial arts schools and philosophical approaches to combat. Goku's advancement through the bracket is not a foregone conclusion — his matches require tactical adaptation and reveal gaps in his preparation that subsequent training will address. The arc's most significant structural contribution to Dragon Ball's mythology is its demonstration that the world contains martial artists of genuine quality outside Goku's immediate circle, giving his development context and establishing that the series will measure its protagonist against a meaningful external standard. The final battle between Goku and Jackie Chun — Master Roshi in disguise, testing his students against his own peak capability to prevent them from becoming complacent — is the arc's emotional and tactical apex, ending in a result that refuses to give Goku an easy triumph.