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If he destroyed only Future Universe 7 then other 11 Universes do not have a ruler God now because he went to the past, isn't that very bad?

If he destroyed all 12 Universes then why did he do that if only Universe 7 was polluted by Zamasu?

marked as duplicate by Aki Tanaka, Darjeeling, Jon Lin, Wondercricket, Dimitri mx Mar 29 '18 at 18:10

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