Kazuma

Kazuma was traited by Asuma Sarutobi, when Kazuma tries to kill the Feudal Lord. After a long fight between Asuma and Kazuma, he died after a finishing attack by Asuma. Chikiru was the only one, who knew about this, which was kept as a secret. He fought Kazuma as well, but lost in fight. In Episode 63 one of the strangers, told Sora, that Asuma killed his father.