Chiaki Kureha is currently a steward of the Shikibe household. He first appears in story 51 and due to having the same last name as Aya and Fuyotoki Kureha, they appear to be related though it is not known how.

He is very formal and polite towards Yuki, referring to him with the honorific '-sama.'

He is also an omyouji, as his family have been for generations, to serve the Giou clan.