Season 12

Thirteen Card Decks were created for thirteen Kamen Riders. They make Contracts with monsters from the mysterious Mirror World, a parallel dimension opposite to our own in which only the Kamen Riders can exist. The Riders draw on their monsters' strength in exchange for feeding them the life force of the creatures they destroy. The creator of the Advent Cards has only one rule: that there can be only one Kamen Rider. The others must be killed, and the sole victor will be granted a single wish, which leads to a conflict known as the Rider War.

Season episodes list 12

S12E01

S12E01 : The Secret Story's Birth 6/10 (aired on 02/03/2002)

News reporter Shinji Kido is drawn into a case involving a series of abductions involving…
S12E02

S12E02 : Giant Spider Counterattack 8/10 (aired on 02/10/2002)

Having become a Kamen Rider himself, Shinji tries to discover more from another Rider and his…
S12E03

S12E03 : School Ghost Story 6/10 (aired on 02/17/2002)

Shinji discovers the truth of becoming a Kamen Rider and the battles yet to come while a school…
S12E04

S12E04 : School Ghost Story 2 7/10 (aired on 02/24/2002)

When Darkwing appeared to scare a student, Shinji inquires further about Ren after suspecting that…
S12E05

S12E05 : The Monster's Antique Store 7/10 (aired on 03/03/2002)

Shinji investigates an antiques shop where Reiko was attacked by a mysterious person when she…
S12E06

S12E06 : The Mysterious Rider (Ryuki) 8/10 (aired on 03/10/2002)

As Ren tries to close in on the antique store murderer, Shinji unknowingly gives Kamen Rider…
S12E07

S12E07 : A New Species Is Born? 9/10 (aired on 03/17/2002)

Yui is pursued into finding a man by her visiting grandmother, while Shinji encounters a lawyer who…
S12E08

S12E08 : The Fourth, Zolda (aired on 03/24/2002)

An investigation leads Shinji to find out more on Shuichi while trying to prove his worth to Yui's…
S12E09

S12E09 : Shinji's Arrested!? (aired on 03/31/2002)

Shinji is arrested after being falsely accused for abducting Nanako, leading to Yui and Ren hiring…
S12E10

S12E10 : Knight's Crisis (aired on 04/07/2002)

Discovering Shuichi is Kamen Rider Zolda, Ren tries to back out of using the lawyer in saving…
S12E11

S12E11 : The Mysterious Empty Train (aired on 04/14/2002)

Shinji pursues Ren after he loses his memory while Yui returns to her brother's university in an…
S12E12

S12E12 : Ren Akiyama's Lover (aired on 04/21/2002)

Ren's past comes to light as both he and Yui return to Shiro's last known whereabouts and the…
S12E13

S12E13 : That Man, Zolda (aired on 04/28/2002)

An investigation into elevator abductions leads Shinji to encounter the one he thinks is Zolda…
S12E14

S12E14 : Revival Day (aired on 05/05/2002)

When Shinji learned that Zolda is actually Goro, Shuichi blames Shinji for his actions, making him…
S12E15

S12E15 : Iron Mask Legend (aired on 05/12/2002)

With Yui hired as a part-time journalist following Chief Editor's absence, Shinji and Yui…
S12E16

S12E16 : Card of Destiny (aired on 05/19/2002)

The ORE Journal is in jeopardy when Jun Shibaura suddenly appears and becomes the new…
S12E17

S12E17 : The Grieving Knight (aired on 05/26/2002)

With Ren doubting his ability to go through killing other Kamen Riders, Shinji and Miyuki…
S12E18

S12E18 : Jailbreak Rider (aired on 06/02/2002)

Imprisoned criminal Takeshi Asakura is approached by Shiro in joining the Rider Fight to grudge…
S12E19

S12E19 : Rider Gathering (aired on 06/09/2002)

Shinji becomes trapped with Takeshi as he holds hostages in order to gain a battle with his former…
S12E20

S12E20 : The Traitorous Ren (aired on 06/16/2002)

Shinji questions Takeshi on why he enjoys killing people for his own satisfaction without thinking…
S12E21

S12E21 : Yui's Past (aired on 06/23/2002)

After discovering Ren's reason for entering the Rider Fight, Shinji hesitates if he should fight or…
S12E22

S12E22 : Raia's Revenge (aired on 06/30/2002)

As Ren tries to learn about Yui's past, Miyuki felt time is running short when Shiro targets him…
S12E23

S12E23 : Changing Destiny (aired on 07/07/2002)

Ren battles with Shuichi in the Mirror World to decide who will survive. Miyuki reveals his past to…
S12E24

S12E24 : Ouja's Secret (aired on 07/14/2002)

Reiko tracks down and investigates Takeshi in order to find out the truth behind his aggressive,…
S12E25

S12E25 : Combining Ouja (aired on 07/21/2002)

Shinji and Ren are forced to track down Yui as she confronts her brother about her connection to…
S12E26

S12E26 : Zolda's Assault (aired on 07/28/2002)

After learning the truth about Takeshi's continuous acts of monstrosity, Reiko feels guilty over…
S12E27

S12E27 : The 13th Rider (aired on 08/04/2002)

A young boy learns about the Rider War and steals Shinji's Deck before coming to realize that it is…
S12E28

S12E28 : Time Vent (aired on 08/11/2002)

Kamen Rider Odin uses Time Vent to correct an error in Time but appears to inadvertently send…
S12E29

S12E29 : Marriage Interview Battle (aired on 08/18/2002)

Yui tells Reiko about her brother's appearances even though he is apparently dead. Reiko and…
S12E30

S12E30 : Zolda's Lover (aired on 08/25/2002)

Shuichi's previous Secretary, Megumi sues him for breaking off their engagement. After finding out…
S12E31

S12E31 : The Girl and Ouja (aired on 09/01/2002)

Shinji and Ren trying to protect a traumatized girl who witnessed a mysterious disappearances among…
S12E32

S12E32 : Secret Data Gathering (aired on 09/08/2002)

Takeshi's three Contract Monsters reach their breaking point and attempt to attack him on multiple…
S12E33

S12E33 : The Mirror's Magic (aired on 09/15/2002)

Megumi attempts to see why Shinji can walk into and out of glass and supposedly finds out but is…
S12E34

S12E34 : Friendship's Battle (aired on 09/22/2002)

Shinji receives a Survive Card from Shiro Kanzaki. Takeshi searches for Shuichi in order to…
S12E35

S12E35 : Enter Tiger (aired on 09/29/2002)

Ren and Shinji continue to fight. Yui learns that Ren will continue to fight for Eri's sake by any…
S12E36

S12E36 : The Battle Ends (aired on 10/06/2002)

Takeshi, who was going to be transferred to a prison instead, escapes thanks to the Metalgelas…
S12E37

S12E37 : Sleep Is Awakening (aired on 10/13/2002)

Yui is attacked by a new Rider. The doctor tells Ren that Eri's sudden awakening is a…
S12E38

S12E38 : Targeted Yui (aired on 10/20/2002)

Shinji learns that in order to stop the Rider War, Yui must be eliminated. After having her first…
S12E39

S12E39 : A Dangerous Sign (aired on 10/27/2002)

Takeshi tricks his new lawyer into showing him his belongings. Ren learns that Hideyuki and Satoru…
S12E40

S12E40 : Memories of an Older Brother and Younger Sister (aired on 11/10/2002)

The ORE Journal staffs discover the secret of Mirror Monsters. Takeshi once again managed to…
S12E41

S12E41 : Imperer (aired on 11/17/2002)

Satoru finds out that Hideyuki has his own family, much to the dissatisfaction of Tojo…
S12E42

S12E42 : Room 401 (aired on 11/24/2002)

Mitsuru accepts both sides' offer to ally with them but ultimately chooses Hideyuki and…
S12E43

S12E43 : The Hero Fights (aired on 12/01/2002)

Mitsuru, after being dumped as an ally by Satoru attempts to ally himself with Shinji, Shuichi and…
S12E44

S12E44 : Glassy Happiness (aired on 12/08/2002)

Yui returns to the Normal World and doesn't remember anything. Mitsuru becomes the head of his…
S12E45

S12E45 : The Twentieth Birthday (aired on 12/15/2002)

Shinji realises that Yui is fading but doesn't believe it at first. However, Yui realizes it…
S12E46

S12E46 : Tiger's a Hero (aired on 12/22/2002)

Shinji learns that the Rider War was created to save Yui. Satoru challenges the other Riders to a…
S12E47

S12E47 : Determination of Battle (aired on 12/29/2002)

On two separate occasions, Shinji is unable to destroy Ren even though he had found a reason to…
S12E48

S12E48 : The Final 3 Days (aired on 01/05/2003)

Shiro tells the remaining Riders to finish the battle in three days. Otherwise, no one will get…
S12E49

S12E49 : Granting a Wish (aired on 01/12/2003)

This episodes marks the revelation of the Mirror World and Shinji's identity as a Rider to Reiko,…
S12E50

S12E50 : A New Life (aired on 01/19/2003)

With his status as the last Rider standing, Ren faces off against Odin in order to grant his wish,…