Raijin-Oh Arrives
E1
Eldran piloting the mecha Raijin-Oh crash lands into Hinobori's elementary school. With the last of his powers, Eldran saves the ones in the school at the moment: class 3 of the 5th grade. He entrust them with Raijin-Oh and the duties to protect the Earth, while Eldran goes into hibernation to recover his powers.
We Are the Earth Defense Class
E2
Class 5-3 gets a visit from the army, demanding to hand over Raijin-Oh. The arguing is interruped when Jaku Beast Dustoron is running loose in the city. After finding out that only Class 5-3 can operate Raijin-Oh, the army has no choice but leave Class 5-3 alone.
Tests Are a Huge Annoyance!?
E3
The entire Class 5-3 average match score of the last test is far below the rest of the other classes and needs to do a retest. Asuka, Kouji, Maria and Tsutomu are assigned to help Jin with his studies as his test score is zero. Jin tries to run away, but in the end can't escape. The next day, right before the retest, Jaku Beast Testora appears and Class 5-3 needs to sortie. After defeating the Jaku Beast, Class 5-3 does the retest much to the dismay of Jin. A couple of days later the tests are graded and Jin has 80 points.
Protect the Field of Flowers!
E4
During an excursion, the boys of class 5-3 gets into a fight with the boys from the local. Meanwhile Kouji meets a girl called Kozue, who explains that the locals are angry that more and more trees are being cut for the expansion of the park for tourists. The next day, Class 5-3 hears that Onoboori mountain (the place they went yesterday) became treeless and a Jaku Beast is attacking. Still remembering the fight, Jin is reluctant to sortie. Kouji insist, saying it's their duty as the defenders of Earth and manage to convince everyone including Jin. With the help of the locals Raijin-Oh manage to defeat the Jaku Beast.
Decision! Unrivaled Dragon Tail
E5
Survive the Traffic War!
E6
Taking Care of Drunkard
E7
Absolute Union of Friendship!
E8
Blowing Away Moldy Feelings
E9
The Town Where Gasoline Vanished
E10
Cookie's Nightmare
E11
The Pool is Too Hot
E12
Get Back the Baby!!
E13
Final Match! Baseball
E14
Fly at Mach 9!
E15
Crash Course in Returning the Shot!
E16
Teacher is a Jaaku Beast!?
E17
Presentation! Earth Defense Class' Secrets
E18
Seaside School is in Chaos!!
E19
Maria has Disappeared!
E20
The Enemy is Raijin-Oh!?
E21
Departure! The Invincible Warrior
E22
Come Forth! Absolutely Invincible Union!!
E23
Dog/Cat Panic Plan!
E24
Getting the Scoop!!
E25
Great African Battle!
E26
Defeat the Earthquake
E27
Garuma's Competition of Fear!!
E28
Appear! Super Jaaku Beast
E29
Jaaku beast is a Friend?
E30
Fierce Battle! Channel War
E31
Adventure in the Haunted House
E32
Terror! Dancing Jaaku Beast
E33
Skiing is Too Cold
E34
Vanished Commander
E35
Jaaku Beast is an Ally of Justice!?
E36
Graffiti Revolt
E37
Psychic Jin
E38
The Celebration is a Troubling Thing
E39
Belzeb's Great Approach
E40
Kidnapping of the Absolutely Invincible
E41
Protect the Secret of the School!
E42
Super Giant Reiko Appears!
E43
Decisive Micro-Battle!
E44
Broadcast! Earth Defense Class Facts!!
E45
Taida Becomes an Earthling
E46
Adult to Child Chaos!?
E47
Transformation! Black Taida
E48
Appear! Jaaku Empire
E49
Defeat Emperor Warza!
E50
Our Dreams are Absolutely Invincible!
E51