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Hayashi was a fellow yoriki of Sano Ichirō. He was a Yoriki by heritage and appeared to be befriended with yoriki Yamaga.

About Hayashi himself not much was know. It was mentioned that he was smaller and younger then Yamaga. Like the other Yoriki he behaved hostile towards Sano, thinking Sano was below him and did not earn his status.

Sano thought of Yamaga as well as Hayashi that they had gone soft, preferring arts and pleasure over training martial arts.