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Shingo Kouzuki is 13 years old and the leader of a local gang of kids. Shingo (most frequently referred to as Kouzuki in the series) is essentially Kappei's rival, as both have tendencies to play in the most dangerous ways possible, e.g. fighting each other with anchors. Like Kappei, Shingo is a skilled martial artist. Shingo is a civilian and does not pilot any anti-Gaizok vehicles, but he is nevertheless thrust into the middle of the conflict due to both circumstances beyond his control and through his own actions. Shingo has a mother and a sister, Kaoru, of whom he is very protective.

(Source: Wikipedia)