Oyassan

Oyassan (おやっさん, Oyassan) is used to refer to one of Rin Azuma's guardians. He is a human married to Okami-san and together they run Hou Houran.

History
As a child, Oyassan worked at Hou Houran with his father. Frequent visotors of their shop were Makiharu Hiizumi, Jinroku Yotsuya and Usuzumi Iyo. Makiharu brought Okami-san to stay with them after exorcising her. Oyassan and Okami-san would eventually marry and take proprietorship of the restaurant.

Hime assigned Rin Azuma to live with them when she arrived in town, where the Oyassan and Okami-san gladly welcomed Rin into their home.