A case of insomnia swept across the globe. As a side effect of the drug developed to suppress this sickness of causes unknown, the “bloodivores” were born. Born from bloodivore and human parents, protagonist Mi Ryu was known as “The Child of Hope” tying bloodivore and humankind together. However, when Miryu is arrested as the principal offender in a bank robbery, he is taken to a special prison operated by the Bureau of Special Threat Management for observing bloodivores.
You think we don't know what 
dirty things you're up to?
 تظنّ أنّنا لا نعرف الأمور القذرة التي تُقدمون عليها؟
Glaubst du, wir wissen nicht, …
¿Crees que no sabemos
las cosas que hacen?
¿Crees que no sabemos
las cosas que hacéis?
Tu crois vraiment qu’on est pas
au courant des saloperies que tu fais ?
Credi che non sappiamo
in che affari sporchi sei invischiato?
Acha que não sabemos das coisas
 sujas que vocês estão por trás?