Tougo Kazama

Tougo Kazama is a childhood friend of Riku's. He managed to recognize Riku as Suraga and while being hunted down by Takao, he awoke to a Jinki core. He later explains that two months earlier, during the NEFT building fire, a bright light (one of the Jinki cores from chapter 15 that Takao lost against Riku) came crashing towards him. The glowing scar he retained from the incident disappeared the next morning. His core has a scratch causing him intense pain, and he can't materialize a blade, forcing F.L.A.G. to engineer a customized weapon for his own use. (Source: Wikipedia)