If Goku were to win, it would take him at least 7 episodes.
English
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*3 seasons
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Edited by Qwerty: 10/28/2015 8:20:03 PM7 episodes to "defeat" 1 season to "defeat all forms" 3 seasons to "defeat the newly arisen 2.0 version with the help of his friends, but only after finding all Dragonballs to revive Goku"