This article is about a/an ally in Engine Sentai Go-Onger.

Harunosuke (晴之助 Harunosuke, 39-40): Harunosuke is a boy who comes from the Samurai World with his younger brother, Akinosuke, in order to protect the small Engine Sword (炎神剣 Enjinken) with a part of Retsu-Taka's soul. Portrayed by Shohei Yamauchi (山内 翔平 Yamauchi Shōhei).

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