Sekiou is a madogu wielder and a murderer who was sentenced to prison for 200 years but, now works for Kurei.  After being initially defeated by Domon, Kurei decapitates him and presents his head to the Hokage. He is also the younger brother of Gaō, who eventually seeks revenge for his brother's death.  from: http://flameofrecca.wikia.com/wiki/Sekiou

Recca Hanabishi is a ninja, but is nearly killed in an accident. However, a girl named Yanagi heals him with her powers. Later, the two are tracked down by a woman who attacks them. She tells Recca to ignite his flame, but he is clueless. Just as she hurts Yanagi, Recca releases a powerful flame upon the woman. She is excited to see this. It turns out that Recca was a baby, from the Hokage Clan of the past, that was sent to the future in order to escape death. Now, Recca is the leader of the new Hokage Clan who must stop his half brother, Kurei, from kidnapping Yanagi.<br><br>
(Source: AniDB)

__Non-Anime Roles:__ 
Bernhardt in "Der Langrisser" (VG) (Japanese)  
Chaos in "Langrisser III" (VG) (Japanese)  
Fahvel in "Langrisser III" (VG) (Japanese) 

Becoming a ninja is just a childhood dream for sixteen-year-old Recca, until a fateful encounter reveals he has inherited ninja powers, including the ability to wield fire! As Recca learns to master the ancient ways of his ancestors, he is drawn to protect a mysterious girl named Yanagi...
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(Source: Viz Media)