Hakudoshi

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Hakudoshi was the one of the powerful yokai in the Rei Yokai Clan who was the Rival of Yozumuze on searching for the Gate to free the Yokais from it Imprisonment cause by the Jailer herself so as that She was part of the Yokai Clans of Rei by stopping the Nura Clans upon to protecting it

so that Hakudoshi knew the Enma Blade was been stolen by someone what She might gave to Rei to contorl the Yokais by weaking the Nura Clans, but so She was sent by Yokaiso by getting fears from Humans in the Human Realm but defeated by Yozumuze