Blood-C - Season 1 (2011)

Saya manages to have a quiet moment alone with Tokizane despite his cold demeanor. Her happiness is brief, however, as an attack from three Elder Bairns results in the deaths of several townspeople and more unanswered questions.

When gym class is canceled due to bad weather, the students take turns telling ghost stories. To Saya's surprise, the story her teacher tells may hold a secret to her past and the mysterious covenant between humans and Elder Bairns.

An Elder Bairn attacks the shrine and kills one of Saya's friends. School is canceled out of fear for the students' safety. So why is Nono wandering the streets? And why does her shadow seem to have a life of its own?

Saddened by the deaths of Nono and Nene, Saya struggles with remembering who she made her promise to protect those in the town she loves. Another Elder Bairn attacks the town and Saya is discovered.

Saya returns to the shrine to find her father unconscious on the floor, leading her to wonder if he might be keeping something from her. When an Elder Bairn attacks the school, she must choose between keeping her secret and saving her classmates.

Carnage fills the school as Saya's classmates are brutally slaughtered by an Elder Bairn. Something about the incident causes her to wonder if the monster's appearance is a coincidence, or part of a larger plan.

Saya begins to question her past, her memories--even her identity--but is interrupted by an Elder Bairn before she can get any answers from her father. Later, in the shrine's archives, Saya and her teacher make a shocking discovery.

Saya's world is turned upside down as repressed memories flood her mind after a dose of Elder Bairn blood. Friends are revealed to be enemies as the truth about Saya's past and the town's dark secret are finally brought to light.

An unlikely mastermind has been manipulating Saya, turning her life into a deadly game. But who is the winner? Before that can be determined, Saya will have to come to terms with her true identity, and stop a rampaging horde of Elder Bairns.