Youhei "Yo-Bro" Takebe

Jinki: Keniji (Inherited-Type) 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.

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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.

(Source: Wikipedia)