The Ultimate Fire: The Legendary Dragon!!
With his gauntlet off, the form of Recca's fire reveals itself. Making a deal with a dragon, Recca turns the heat up on Kurei. Source: crunchyroll
Aired 01/11/1997EP 13 - The Ultimate Fire: The Legendary Dragon!!

1997
Flame of Recca
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.
(Source: AniDB)