Mangas

朱月のアゲハ, 朱月的羽音, Aketsuki no Ageha, Diluculum Papilo
Once again, the police are baffled by the serial killings of several young women. Kudou, a detective, is referred to a young girl by a friend. But this girl isn't what she seems - Kudou saw her at the crime scene. Apparently she's a vampire!!
きみの騎士 -  你的騎士 -  Your Knight
Chigusa is frustrated with her inability to protect her friend, Arisa.