That Has Made Me Sad
Saya asks Tadayoshi about the meaning behind the covenant mentioned by the Furukimono, but is dissuaded by him. That night, when confronting three Furukimonos attacking a group of workers, one of the mentions that the covenant between humans and Furukimonos must be honored.
Aired 29/07/2011EP 4 - That Has Made Me Sad

2011
Blood-C
Saya is a seemingly normal girl living with her father in a shrine. During the day she goes to school and spends time with her friends at a local cafe. But when night falls Saya is called upon to protect her village from strange monsters.
(Source: Anime News Network)