Shirou Karasawa

Shirou Karasawa is a mysterious figure depicted as the source of Kanshus. Unnamed at first, he appears as a man in a suit wearing a kitsune mask who visits Riku and uses his mask to confuse and recruit the young man. He is the former director of Flag and uses a special device to access to Flag's computer systems. He has promised Neene that he will help her discover herself and her origins.

~!He is revealed to be the master of the Coffin Princess Ende and only founded F.L.A.G. to find Ende. After he found her, he faked his own death but his body was seriously damaged, only left his upper half of his body. Karasawa Shirou was also called "The Source of the Infection" and was responsible, for what happened on Hatsumi Island, too. In the end, he was literally defeated by Takao Ryuusei and was killed by Tougo Kazama.~!