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.

Chiriku 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 this father.