Ep. 21: The guardians protecting the gate of X City
Aired on February 25, 2006
21
Episodes
- Ep. 17 · The Secret of Team ST is finally revealed
- Ep. 18 · A new assassin emerges as siblings engage in a battle during the test
- Ep. 19 · A confrontation occurs between Flame Kaiser and Thunder Emperor
- Ep. 20 · A Fierce Adversary Appears: The Ninja Rider Koei
- Ep. 21 · The guardians protecting the gate of X City
- Ep. 22 · Arrival in X City
- Ep. 23 · The Idaten Battle Tournament Commences
- Ep. 24 · Flame Kaiser crashes into Neptune in a dramatic confrontation
- Ep. 25 · Hammerhead! The 6th Idaten Bike