Kamen Rider Season 21

(2010) September | # of Episodes : 48

Ratings

6.3

7.9

Series Details

Seasons: 35

Total Episodes: 1662

Creators: Shotaro Ishinomori

Networks: tv asahi , TBS , NET

Status: Returning Series

First Air Date: Apr 3, 1971

Recent Air Date: Nov 17, 2024

Run Time: m

In Production: Yes

Original Language: Japanese

Age Rating: L

Website: Link

Production Companies: TV Asahi , Toei Company , Asatsu-DK , Ishimori Productions

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Keywords

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Episodes 1 on Amazon Video

Synopsis

Coin-based homunculi known as the Greeed have awoken from an 800-year slumber! The only hope of stopping them in their pursuit of human desires is a rogue Greeed named Ankh, reduced to the form of a disembodied arm, and the wandering hermit Eiji Hino. Presented with a belt and three Core Medals, Eiji steps forward as the champion of human desire - Kamen Rider OOO!

Main Cast

Shu Watanabe

Eiji Hino / Kamen Rider OOO

Age : N/A | Popularity : 36%

Asaya Kimijima

Shintaro Gotou

Age : N/A | Popularity : 8%

Hiroaki Iwanaga

Akira Date / Kamen Rider Birth

Age : N/A | Popularity : 49%

Ryosuke Miura

Shingo Izumi / Ankh

Age : N/A | Popularity : 25%

Marie Kai

Chiyoko Shiraishi

Age : N/A | Popularity : 7%

Takashi Ukaji

Kousei Kougami

Age : N/A | Popularity : 38%

Mayuko Arisue

Erika Satonaka

Age : N/A | Popularity : 3%

Yukana

Mezool (voice)

Age : N/A | Popularity : 41%

Episodes

Episode 1

05 September 2010 - Medal, Underwear, Mysterious Arm

A mysterious arm reawakens the Greeed from their slumber and decides to use Eiji Hino, a cheerful wanderer, as his means of getting back what he desires as Kamen Rider OOO.

Episode 2

12 September 2010 - Greed, Ice Candy, Present

Ankh explains the Greeed and the purpose of the Medals to Eiji, even as the human desires to merely use his new power to fight for good instead of for selfish needs.

Episode 3

19 September 2010 - Cat, Evolution, A Glutton

Ankh becomes troubled when Eiji prevents him from eliminating his possessed body's sister while another Greeed uses a man's gluttony to create more Medals.

Episode 4

26 September 2010 - Doubt, Photo E-mail, Saving Hand

Ankh threatens to leave OOO for Kazari and the Greeed while investigating the evolution of humanity while Eiji tries to find more about Hina.

Episode 5

03 October 2010 - Game of Tag, Nest, Celebrity

Kougami asks for a share of Eiji and Ankh's Medals, while Mezool decides to use Hina's shopaholic classmate to create a new Yummy.

Episode 6

10 October 2010 - Western Clothing, A Contract, Ultimate Combo

Hina confronts Yamano's shopping addiction when her father goes bankrupt while Ankh confronts Kougami about his share deal of the Cell Medals.

Episode 7

17 October 2010 - Useless Husband, A Trap, Big Win

Eiji tries to research a husband bullied by his wife that is being mocked by Gamel while Ankh follows a lead for a missing Core Medal.

Episode 8

24 October 2010 - Slacking Off, Lack of Ambition, On a Break

Eiji gets to the root of the Komoris' problem involving greed and loss of ambition while Ankh fights for survival after a failed confrontation with Uva.

Episode 9

31 October 2010 - Soaked, The Past, Scorching Hot Combo

A serial bomber tied to a nest of Yummies leads to Eiji to reveal his past to Hina and forces him to encounter a strange man he believes is Mezool's victim.

Episode 10

14 November 2010 - Fist, An Experiment, Super Bike

Eiji must figure the means of stopping the mad bomber and his Yummies to prevent any more lost lives, even with Maki observing the creation of his worker's monsters.

Episode 11

21 November 2010 - Traveler, Swallowtail Butterfly, Celebrity

Eiji's traveler friend becomes manipulated by Uva into becoming famous as he steals others attributes; while Gotou doubts Eiji's effectiveness as OOO.

Episode 12

28 November 2010 - Unagi, The World, Heavy-Hitter Combo

Eiji teaches a lesson to Tsukuba and Gotou about going forth to gain what is desired; while Ankh tries to figure a way to manage the flying Ageha Yummy using Gamel.

Episode 13

05 December 2010 - Siamese Cat, Stress, Genius Surgeon

Ankh is at a breaking point with everything surrounding his human host; a highly sought after doctor has been repeatedly removed from the operating room, making her frustration a perfect target for the Greeed.

Episode 14

12 December 2010 - Pride, Surgery, Secret

Both Hina's brother and the hospital director are in critical condition after Ankh's detachment and the Yummy attack. Eiji must find both Ankh and the affected surgeon before it's too late.

Episode 15

19 December 2010 - Struggle for the Medals, Transport Truck, Container

Ankh finds one of his core medals; Gotou is transporting a truck full of medals to Doctor Maki; Kazari appears to Ankh and Eiji, telling them that Hina is in Gotou's truck.

Episode 16

26 December 2010 - Conclusion, Greeed, New Rider

Eiji learns about how the Greeed were born; Gamel searches for Mezool; Kamen Rider Birth joins the fight.

Episode 17

09 January 2011 - Kendo Girl, Oden, Splitting Yummy

The Greeed take an interest in a girl who wants to get better at kendo; Ankh takes an interest in Kamen Rider Birth; Hina gives both Eiji and Ankh gifts for saving her.

Episode 18

16 January 2011 - Destruction, A Reason, Unagi Whip

Eiji and Ankh try to find out the reason that the Yummy split in two, but Kamen Rider Birth is one step ahead of them.

Episode 19

23 January 2011 - A Red Medal, A Detective, A Betrayal

Kougami tries to give Eiji one of Ankh's medals, but he refuses; a face from the detective's past shows up at Cous Coussier; thanks to Kazari, a criminal that the detective put away is on the streets and looking for revenge.

Episode 20

30 January 2011 - Decoy, Qualifications, Flaming Combo

Ankh tricks Kazari by telling him that Eiji knows where his last medal is and then chases after Hina who has his own medal; Date and Gotou discuss the skills need to be Kamen Rider Birth; Kougami changes his mind and sends Ankh's medal to Eiji.

Episode 21

06 February 2011 - Hopper, Parent and Child, Hero

The Cous Coussier gang runs into a young boy getting attacked for telling off a man for littering, learning that it's something he picked up from his father; the Greeed creates a Yummy from the desire to help people.

Episode 22

13 February 2011 - Choco, Conviction, Power of Justice

Susumu lets his desire for justice get out of hand and it's up to Eiji to stop him before it's too late; Gotou and Takashi have a heart-to-heart conversation about their ideals.

Episode 23

20 February 2011 - Beauty, Egg, Dormant Desire

Kazari is drawn to the vanity of woman whose sister takes all the credit for her work.

Episode 24

27 February 2011 - Memory, Love, Sea Combo

Eiji is head over heels for Yuumi and it's up to Date to save his old friend before she does something that she'll regret.

Episode 25

06 March 2011 - Boxer, Left Hand, Bird Yummy

Ankh is acting more standoffish than usual; a boxer is forced into retirement just before a big match and is captured by a bird Yummy.

Episode 26

20 March 2011 - Ankh, Ring, Pile on Everything

Eiji is still super beat up from the previous battle but he is the only one who believes that Ankh did not create the bird Yummy; Kazuki heads back to the ring as Date and Gotou rush to stop him from injuring himself more.

Episode 27

27 March 2011 - 1000, Movie, Combatant

Kougami invites Eiji and Ankh over to celebrate the 1000th episode of Kamen Rider and decides to make a movie to celebrate; Kazari is drawn to a Shocker grunt who joins the movie.

Episode 28

03 April 2011 - 1000, Kamen Rider, Birthday

Even though he's injured, Date still wants to finish directing the movie; Sendou starts sabotaging the movie with his new friends.

Episode 29

10 April 2011 - Older Sister, Doctor, The Truth About Ankh

Kazari uses Dr. Maki's desire to make a Yummy; Gotou goes back to work; a strange monster shows up with Ankh's other arm.

Episode 30

17 April 2011 - King, Panda, Memory of Flame

Dr. Maki and Chiyoko have a heart-to-heart talk about his sister; Kazari takes Ankh's memoryless body under his wing; Kougami tells Gotou the story of the medals as Eiji and Date get Ankh to finally tell his story.

Episode 31

24 April 2011 - Repaying a Favor, Scheme, Purple Medals

Dr. Maki and Kazari try to awaken a brand new Greeed; a man has been unknowingly using Greeed money to pay off an old debt; Eiji gets infected by purple core medals.

Episode 32

01 May 2011 - A New Greeed, Void, Unrivaled Combo

An x-ray reveals that there should be nothing wrong with Eiji; Date tells the others about the time he previously ran into Eiji; Eiji uses the purple medals.

Episode 33

08 May 2011 - Friendship, Out of Control, Left-Behind Belt

Eiji is forced to use the purple medals again; an old friend from High School invites Eiji to an amusement park where Hina is then kidnapped; a Yummy abducts Date and Gotou.

Episode 34

15 May 2011 - Best Friends, Using, That Relationship

Ankh tells Eiji about what his friend has been doing; a Yummy kidnaps Ankh; Eiji forces himself to use the purple medals.

Episode 35

22 May 2011 - Dreams, Brother, Birth's Secret

Hina wins first place in a fashion contest and is offered a chance to study in France; Dr. Maki creates a Yummy that destroys people's dreams; Date collapses in battle and Kougami finds an interesting x-ray on his brain.

Episode 36

29 May 2011 - Broken Dream, Body, Greeed Revival

Hina's brother has woken up, leaving Ankh without a host; Eiji discovers Hina destroying all of her clothes after getting her dream broken; Uva revives Mezool and Gamel.

Episode 37

05 June 2011 - Sleep, 100 Million, Birth's Employment Shift

Gotou finds Date avoiding his checkup; a Yummy causes people all over the city to suffer from insomnia; Dr. Maki makes Date an offer.

Episode 38

12 June 2011 - A Situation, A Parting, A Tearful Birth

Date joins forces with the Greeed; Gotou tries to raise the 100 million yen himself; a new Birth is born.

Episode 39

26 June 2011 - Nightmare, Surveillance Camera, Ankh Strikes Back

Ankh has nightmares about losing Eiji to the purple medals and other Ankh; a man has set up surveillance cameras all over the neighborhood, trying to force out Eiji and Ankh because they make the neighborhood look bad; now that Gotou is Birth, Kougami assigns Satonaka as Birth's new partner.

Episode 40

03 July 2011 - Control, Birthday Party, Ankh Disappears

The Cous Coussier crew get thrown out of town where they decide to throw Ankh the birthday party for Hina's brother; the Yummy has holed himself up with a human barricade, forcing our heroes to wait until he surfaces again; the other Ankh waits for his other self to let his guard down so that he can become whole again.

Episode 41

10 July 2011 - Siblings, Rescue, Eiji Leaves

Ankh is absorbed into a single body, but the two halves are still not completely whole; Eiji begins to wonder about his place in the Izumi family's life as Shingo tries to help him out in Ankh's place; Gotou helps Eiji on his mission to rescue Ankh, but Eiji is stopped by Dr. Maki.

Episode 42

17 July 2011 - Ice, Greeed Form, Broken Wings

Dr. Maki explains to Eiji about the process of becoming a Greeed and the dulling of the human senses, leading Eiji to discover that it is already happening to him; a Yummy is trapping people in ice and calling out for OOO's help, but HIna refuses to let him go; Eiji does battle with Ankh, destroying.his core medals.

Episode 43

24 July 2011 - Vulture, Antagonism, Ankh Returns

After Ankh's cores were destroyed, he becomes in need of a body and yet again takes the detective's, also realizing that he's different now and creates a Yummy; Hina comes to the conclusion that she's been too selfish and reliant in regards to other people, making the decision to change and stand by Eiji no matter what; Ankh revives Uva and makes a deal with Dr. Maki to become his container of medals.

Episode 44

31 July 2011 - All Members Together, Full Revival, Your Desire

Kazari and Ankh butt heads over who is the leader of the Greeed; Hina and Gotou try to find Eiji's desire so that the purple medals will stop making him go berserk; Hina stops Ankh from taking medals from Eiji, but Kazari swoops in and gets the last of his nine medals; Eiji destroys one of Kazari's core medals, allowing Dr. Maki to steal the remaining medals from a weakened Kazari.

Episode 45

07 August 2011 - Surprise Attack, Proto Birth, Desire for Love

With Birth in need of repair, Erika retrieves the Prototype Birth driver in order to make do; because they are at a major disadvantage, Eiji and Gotou decide to go on the offense and attack the Greeed first; the other Greeed confront Dr. Maki and Ankh, with Mezool fully reviving and leaving Gamel, who also has the remainder of his medals.

Episode 46

14 August 2011 - Eiji Greeed, W Births, Ankh's Desire

Gamel rampages throughout the city trying to revive Mezool with one of her core medals; Eiji washes up on the beach with the purple medals acting up, and before he can find his driver, Ankh shows up to stop him from turning into a Greeed; Gotou has his Birth driver back, but he's in trouble and Erika gives the prototype to a familiar face.

Episode 47

21 August 2011 - Red Days, Fulfilled, Eiji the Container

Dr. Maki makes Eiji go berserk and fight Ankh when he won't give up the purple medals, but Ankh can't force himself to purposefully hurt Eiji; Ankh believes that one of his medals was broken by Dr. Maki and lets Hina know that her brother will be returned soon; Eiji discovers his true desire; Uva is fully revived.

Episode 48

28 August 2011 - Tomorrow's Medals, Underwear, A Grasping Hand

Eiji receives a present from Kougami; Dr. Maki decides to make Uva the container for the core medals; Ankh returns to Eiji's side as they prepare for the final battle.

Crew

Department	Role	Name
Sound	Theme Song Performance	Maki Ohguro
	Music	Nakagawa Koutarou
Production	Producer	Kengo Motoi Kazuhiro Takahashi Naomi Takebe
Writing	Series Composition	Yasuko Kobayashi
Directing	Series Director	Ryuta Tasaki
Department	Role	Name

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