Inu x Boku SS: Ririchiyo Shirakiin

Chiyo-chan is a half-human, half-demon high school girl who transferred to Room 4 of the Ayakashi Mansion in order to live alone. She yearns to be independent and constantly worries about not being able to communicate with other people properly, one of her reasons for moving. Her SS agent and servant is Sōshi, a fox spirit.