Imari and Shigaraki

Mikihisa's spirits are Imari(a kitsune) and Shigariki(a tanuki) which use stones as their mediums

About
Imari & Shigariki are both a pair of Kami-Yamas(mountains gods). They are a pair of high-level Seirei-Class animal spirits of the mountains and the guardian ghost's of Asakura Mikihisa, that he gained from his travels, training and hiking in the mountains.

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Trivia

 * It would seem that Imari & Shigariki are what Ponchi and Conchi would be like if they would give up there large ego.