James Ratri

ジェイムズ・ラートリー, William Minerva (ウィリアム・ミネルヴァ)
James Latley is the 35th descendant of the Latley Clan who sealed the promise between humans and demons 1000 years ago. After seeing the horrors that humans has been through he decided to give them a chance to live. He put several codes inside his books so the kids could escape the plantations.