Nabari no Ou (2008)

Season 1: Episode 23

Having brought Yoite and Miharu to Hattori, Yukimi uses the excuse of making the two repent to cover what he did. While Hattori explains how he convinced Yoite to learn the Kira, Raiko finds Ichiki, but before he can do anything he is attacked by Shiranui, the squad leader of the Tattegami. Elsewhere, Kouichi, Raimei, and Gau are attacked by the Kairoushuu ninja. Raiko injures Shiranui, and attempts to attack Yukimi. However, Hattori kills Raiko. Raimei and Gau leave Kouichi to fight off the Kairoushuu ninja, only to find out that Raiko is dead.