over Riku when she greets him as her "Papa". Rena is a young Jenki user who is depicted as a quiet and serious person focused on her job, who frequently takes the lead when fighting Kanshus. Her Jinki is Shingetsu, a pair of chakrams with a trigger-like grip that allows the four blades of each Shingetsu to spin. After Youhei's death, she becomes Riku's partner, whom she appears to have become attracted to, after their meeting with the Source of Infection. Later on, it is revealed she is a "lost re-bound" victim; the person who disappeared was someone she considered a mentor. She then had a flood of memories ending with the vision of a masked person. Her hometown was on Hatsumi island, which everyone had forgotten due to a Kanshu attack. She is currently looking for Riku and Neene, who disappeared after holding F.L.A.G.'s director hostage. In the battle of the rubble tower she fought a black kanshu who fought similar to her father. She disappeared with Riku for three months after the end of the battle. Youhei is a Jinki user and Rena's initial partner. He is depicted as an optimistic and cheerful person. Before the series began, he and Riku met during their stay at the hospital and became fast friends. At the start of the series, Youhei and Rena rescued Riku when he was first attacked by Kanshus. His Jinki resembles a short blade and was given to him by his teacher, to save him from Kanshu-inflicted wounds. In an ironically similar situation, Youhei ends up entrusting his own Jinki to a wounded Riku. At his own request, he is beheaded by his old friend before he could become a complete Kanshu. Takao is a Jinki Hunter who seeks Neene's power in order to defeat the elusive Source of Infection. He is a widely discussed mass murderer, having taken dozens – perhaps hundreds – of lives since he became a Hunter two years ago. To aid him in fights against Jinki Users, he uses the captured Jinki cores of past slain users to boost his power tremendously – enough to shatter Cages with a single hit. To top it off, he is highly skilled with his katana. He is in contact with a mysterious person by the name of Julie and appears to have once been betrayed by an individual called Shiro. Even with a ruined