Dragon League

(Esta sinopse está em inglês. Ajude a comunidade traduzindo!)

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Tokio and his father Amon go to the soccer country of Elevenia where they see a parade of the strongest soccer team of that country, the Winners. Amon challenges the team captain Leon to a soccer battle and, when Amon loses, Leon turns him into a miniature dragon. Tokio sees the fight and decides to challenge against Leon so that Amon can become human again.

(Source: AnimeNFo)