Blood-C: The Last Dark

A group of youths known as SIRRUT opposes Fumito Nanahara, a powerful political figure with control over Tokyo. They use the internet to uncover information about Fumito and his secretive organization, "Tower," which is involved in human experiments. During an attempt to expose "Tower" in a subway ambush, strange creatures attack. A girl named Saya appears, wielding a Japanese blade to fight these creatures. Saya is connected to a past tragedy in Ukishima Province. The story explores the experiments Fumito and "Tower" are conducting with the creatures, and whether Saya can seek revenge against Fumito.