Evil Trap! The Angry Fujin!!
Recca faces the last Karyu in the desert, Setsuna and the old man reveals himself to be the 7th dragon, Koku. Back at the arena, Fuuko fights Mikoto, in order to avenge a little boy's father's death by her (Mikoto). During the fight, the Mikoto Fuuko was fighting was actually a robot. The real Mikoto appeared and later abused the referee who accused her of cheating because her madogu takes human form. Fuuko was eventually poisoned by the Dokumashin, a poisonous nail that contains the poisons from all over the world. Mikoto too was poisoned in order to release the Gendokugan (the antidote). Fuuko took one dose but was eventually defeated since Domon interfered. Back at the desert, Recca fights Koku and told Recca to combine the dragons just as he (Recca) fought Magensha. However, there are rules to be honored to successfully summon composite dragons. NOTE: This is the only episode in the anime where Recca is only a minor character.
Aired 19/06/1998EP 40 - Evil Trap! The Angry Fujin!!

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)