At this point, we know that he his a member of the Yotsuba. Miyuki hates his dad because he uses him for working at his company and that he re-married shortly after his mothers death. -Maya (sp) the leader of the Yotsuba's doesn't like Tatsuya. -Something happened to Tatsuya to where only a few skills took up most his calculating portion of his
Maya mentions that some of the members that were captured were members of STARS. In other words, Maya has some connection with the STARS, because of that connection Maya is asking Tatsuya to rescue them. This time the interests of the Yotsuba and Tatsuya are aligned if it benefits Miyuki he doesn’t mind. Tatsuya accepts Maya’s command. Ooguro Ryuuya (大黒 竜也) is an unregistered Strategic-Class Magician of Japan, and a Special Officer of the 101 Independent Magic-Equipped Battalion led by Major Kazama. The real identity of Ooguro Ryuuya is known only to a few select people that are connected to him and his affiliates. He is called the 'Obsidian Demon' because he appears in battlefield wearing a pure black mobile suit Casting Assistant Device (術式補助演算機), better known as CAD (シーエーディー) is a spell support processor. Magicians also call them Device (デバイス) or Assistance (アシスタンス), and in Japan Magic Operator. It is a machine researched & developed using Magical Engineering Technology. This device incorporates synthetic materials (artificially manufactured Neurons J9YgvL.