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Yakumo Katou

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This article is about a/an ranger in Shuriken Sentai Ninninger.
Yakumo "Cloud" Katou
Gender: Male
Sentai Show: Shuriken Sentai Ninninger
Color: Blue
Homeworld: Earth
First Appearance: Ressha Sentai ToQger vs. Kyoryuger: The Movie
Last Full Appearance:
Number of Episode Appearances: 47 (Ninninger)
5 (movie)
Full list of appearances
Actor: Gaku Matsumoto
"The Rumbling Cloud! AoNinger!"
―AoNinger's roll call[src]

Yakumo "Cloud" Katou (加藤 "クラウド" 八雲 Katō "Kuraudo" Yakumo?) is AoNinger (アオニンジャー Ao Ninjā?, Blue Ninja), who is known as The Cool Ninja (おちついた忍者 Ochitsuita Ninja?)[1], the Blue Ranger of the Ninningers. He is mostly nicknamed as Yakkun (やっくん?) by Fuuka and Nagi.


One of Yoshitaka Igasaki's successors, Yakumo was one of his grandchildren chosen to become the Ninningers. He was called by Tsumuji Igasaki, his uncle and Takaharu and Fuuka's father to return to Japan. After reunited with the other Ninninger candidates, Tsumuji leads them to Gengetsu Kibaoni's resting place, which was sealed by Yoshitaka until the Sealing Shuriken were released by the revived Gengetsu and wandered off to various part of the city. After the Ninningers destroy Youkai Kamaitachi, it grew large and they received five OtomoNin Shuriken, which they used to form Shurikenjin and finished the Youkai. Yoshitaka revealed himself to be much alive, but lectured them for their inexperience and lead them to their new dojo that they will use as their new base. In the end, Yakumo was forced to abandon his magic training from England to take the mantle of AoNinger. Shinobi 1: We're Ninja!

During the hottest point in summer, the boys decided to play a prank on the girls after Nagi overheard Kasumi confide in Fuuka that she was afraid of ghosts, with Yakumo only agreeing after being accused of being scared of Kasumi. Luring the two to an abandoned building which they claimed to be haunted possibly due to a Yokai, they proceeded to put on spooky costumes, with Yakumo dressing as a fallen soldier. Pulling their prank, they were confused to see only a spooked Fuuka run out, especially due to her claiming to see a 'lady ghost' which they did not account for. Takaharu headed back for Kasumi, followed by Yakumo and Kinji. With no word, Nagi and Fuuka found they had been frozen by the Yokai Yuki-Onna, with Fuuka soon following suit. Left alone, Nagi managed to conjure some heat as Kasumi revealed herself having used a decoy, luring the Yokai into a trap. Yakumo and the others were thawed by a Fire technique as the Ninningers proceeded to defeat Yuki-Onna. Shinobi 23: It's Summer! Ninja Courage Test

Yakumo girl

Yakumo undercover as a potential actress.

When Fuuka was scouted by a producer for his new movie featuring the popular actor SILVER as Dracula, the Ninningers, suspecting the Western Yokai Dracula was involved, went undercover and accompanied Fuuka to her audition, with Yakumo and Nagi disguising themselves as potential actresses alongside Kasumi. Along with all the other candidates bar Fuuka; Yakumo, Nagi then Kasumi as well fall victim to Dracula's bite, putting them into a deep sleep allowing him to harvest human fear through induced nightmares. Yakumo and the others soon wake up when their life energy is returned following Dracula's defeat by Fuuka, Takaharu and Kinji. Yakumo, Nagi, and Kasumi then board their OtomoNin to get back at Dracula, pushing him back enough for Takaharu to destroy the enlarged Western Yokai. Shinobi 25: It's Summer! Beware of Dracula

Yakumo 5th

Yakumo finds that he has come 5th in the mid-point Last Ninja race.

When Yoshitaka announced the mid-point results of the Last Ninja race, Yakumo was disappointed to learn that he had only made second-from-last at 5th. In reality, however, "grandad" was actually Nekomata's doppelganger Yokai Mataneko in disguise, who intended to get revenge against the Ninningers by breaking them up, hosting a lightning quiz round when the initial results failed. After the Ninningers noticed signs that something was amiss, Kasumi fetched a second Yoshitaka, exposing the first as a fake via catnip. The Ninningers then transformed to fight him, with Takaharu as AkaNininger Chozetsu defeating Mataneko with Shinobimaru after being accidentally enlarged alongside the Yokai. Afterwards, at the request of his grandchildren, Yoshitaka gave his true mid-point results, stating that they were all still at the starting line, with this news only giving them a strengthened resolve to continue training. Shinobi 26: It's Summer! Last Ninja Race Intermediate Announcement!


Yakumo insists that Takaharu's acquaintance doesn't concern him.

Finding Takaharu bringing a girl to the house, Yakumo along with Nagi, Kasumi and Kinji, discussed this new development while eavesdropping on the two, wondering what Fuuka would make of her brother having a girlfriend. Inadvertently revealing themselves when Fuuka arrived, it turned out that Takaharu's 'girlfriend', Kikyo Kousaka, was an old friend of his from his days travelling while training as a ninja, having returned due to the opening of a new ninja school by the ninja master Kiroku Ise, where she was to instruct new students. This intriuged the Ninningers, with Yakumo sneaking into the school with Kasumi and Kinji, they learned that Kiroku was involved with the Kibaoni Army following a skirmish with Masakage Tsugomori, warning Takaharu who came to confront him personally. Yakumo and the others later helped the students escape from the school before saving Takaharu, Kikyo and Kiroku from Puppet Ninja Kuroari who had been manipulating Kiroku, with the Ninningers proceeding to defeat the dark ninja. After Takaharu said goodbye to Kikyo, the Ninningers were amused that he misunderstood what Kikyo meant by wondering what they would be when they next met, assuring him that he didn't have to worry about it yet. Shinobi 30: Targeted Ninja School!

Beyond AoNinger, Yakumo fought through the Yokai horde before reuniting with the others as they backed-up Takaharu against Sakuya Kyuemon. With their unwavering resolve, all six Ninningers were able to restore their Nintality, transforming together and overcoming Sakuya Kyuemon, managing to get through to him before he was absorbed by Gengetsu who, as a giant, would be finally destroyed by the Ninningers in Gekiatsu Dai-Oh with help from Kyuemon, who left behind the End Shuriken before passing away. With the End Shuriken in their grasp, the Ninningers used it to wish for a world without the End Shuriken, finally wiping out the Yokai and restoring the damage that had been done to the world. With the title of Last Ninja passed onto them, the six Ninningers elected to go their seperate ways and meet back in two years to recollect what they have each done.

Naming himself the Last Magic Ninja, Yakumo returned to his magic school in England where he taught a combination of ninjutsu and magic. Shinobi Final Chapter: To a Future Without Hiding, Wasshoi!


Yakumo has lived most of his life abroad and was learning European magic in England when he was called back. He is the rich boy type with a cool demeanor and somewhat presumptuous. In contrast, however, he has a quick temper and can be a bit of a bonehead at times.[2] Out of his cousins/Ninningers, Yakumo is a quick-learner and can master ninjutsu quickly than the others, claiming it easier than magic.

Yakumo at first had no interest in Ninjutsu, claiming it easier than magic training. This was however until when he was lectured by Takaharu/AkaNinger and had developed a rivalry with him, he decided to compete with the others to inherit his grandfather's title as the Last Ninja.

Thanks to his tactical mind and maturity, he is more level-headed than his cousin Takaharu, and as such can be seen as the unofficial leader of his Sentai team.

Western Combo

The Western Combo.

After bonding with Kinji Takigawa/StarNinger, Yakumo's partnership with the American-born ninja is jokingly refered to by the other Ninningers as the Western Combo (欧米コンビ Ōbei Konbi?, Western Combi), coined by Kasumi, refering to the special relationship between the United States of America and the United Kingdom of Great Britain. Shinobi 11: Shinobimaru, Come Back!


Main article: Igasaki Clan

Powers and Abilities

Ninjutsu Expertise
Being trained to be a ninja for many years, he is skilled in ninjutsu and Shuriken Ninja Arts.
Enhanced Reflexes
Since Yakumo as well is a trained ninja, his body reflexes also maximized.
Body Flicker
He was able to move at an almost untraceable speed in a puff of smoke.
Body Replacement
He is able to put a straw dummy in his place to fool his enemies.
Shuriken Ninja Art (シュリケン忍法 Shuriken Ninpō?)
Thanks to his Nintality inherited from Yoshitaka Igasaki, Yakumo can perform a wide variety of abilities through ninja techniques in addition to those accessed using the Ninninger arsenal.
Magic Expertise
As a student of a unnamed wizarding school in England, as well as having being tutored by Tsubasa Ozu/MagiYellow, he has shown many skills of magic. Yakumo notes that magic wears off over time meaning that, such as in the case of his transformation spells, they are only temporary. Shinobi 28: Race to It! The Kibaoni Ninja Squad
Fire Manipulation
He was able to create a fire and shape it into a small dragon with his wand. When imbued it with AkaNinger with his Shuriken Ninpo-fuelled Flame Technique, it turns him into a giant fire dragon that attacks his target.
He was able to use his wand to levitate himself and fly around.
Daudora Taiha (ダウドラ・タイハ?)
Forces the target to reveal what information Yakumo wanted to know.
Roude Migaka (ローデミ・ガカ?)
Creates mirror as a defensive shield against magic-themed attacks.
Reena ni Kota (レーナニ・コタ?)
Turns Dragomaru into its kite-riding formation.
Reedomo Nin Gorado (レードモニン・ゴラド?)
Revert the kite-riding Dragomaru back to its dragon formation.
Reega Arimo (レーガ・アリモ?)
Creates a cyclone as an attack.
Reena ni Kinuta (レーナニ・キヌタ?)
Changes the target into a Tanuki statue, accidentally used on Tsumuji Igasaki. Shinobi 17: Good Bye, StarNinger!
Redomo ni Shidarifu (レードモニ・シダリフ?)
Revert the spells that affected the target to normal, used to reverse Tsumuji's aforementioned Tanuki transformation. Shinobi 17: Good Bye, StarNinger!
Reena ni Miruguinu (レーナニ・ミルグイヌ?)
Changes the target into a plush white dog toy reminsicent of Wanmaru, used on Fuuka. Shinobi 28: Race to It! The Kibaoni Ninja Squad
Reena nichamo Onomaruku (レーナニチャモ・オノマルク?)
Changes the target into a dump truck toy reminiscent of Dumpmaru, used on Nagi. Shinobi 28: Race to It! The Kibaoni Ninja Squad
Reena nichamo Onotagi (レーナニチャモ・オノータギ?)
Changes the target into a toy guitar, used on Kinji. Shinobi 28: Race to It! The Kibaoni Ninja Squad
Reena ni Uyoginni (レーナニ・ウヨギンニ?)
Changes the target into a doll, used to turn Kasumi and Takaharu into a pink girl doll and an AkaNinger figurine respectively. Shinobi 28: Race to It! The Kibaoni Ninja Squad
Reena nichamo Onongorado (レーナニチャモ・オノンゴラド?)
Changes the target into a blue dragon toy reminiscent of Dragomaru, used on himself. Shinobi 28: Race to It! The Kibaoni Ninja Squad
Reena ni Jaanni (?)
Shuriken Sentai Ninninger vs. ToQger

Video Game appearances

Super Sentai Battle Base

AoNinger is among the vast pantheon of Rangers which are available in the mobile game Super Sentai Battle Base, with his Chozetsu form also being available.

Shuriken Sentai Ninninger: Game de Wasshoi!!

AoNinger appears with his team in Shuriken Sentai Ninninger: Game de Wasshoi!!, where they are controlled by the player to fight the Yokai as on the show.



AoNinger outfit

"Ao Ja! Ninja!"
―Transformation announcement[src]



Chozetsu AoNinger

AoNinger Chozetsu

"The Chozetsu! Chozetsu Ninja!"
―Transformation announcement[src]

AoNinger Chozetsu (アオニンジャー超絶 Aka Ninjā Chōzetsu?) is AoNinger's power-up form accessed through the Chozetsu Shuriken and Chozetsu Shoubu Changer with Shishi-Oh's blessing, allowing him to fight with the power of the lion OtomoNin.



Appearances: Episodes 38, 44


Chozetsu Yakumo

"The Chozetsu! Chozetsu Ninja!"
―Transformation announcement[src]


This form is exclusive to Episode 38.

OtomoNin Seiryuumaru (オトモ忍セイリュウマル Otomo Nin Seiryūmaru?, lit. "Companion Ninja Azure Dragon Circle") is a dragon-themed OtomoNin designed by Yakumo. It forms the right arm of Gekiatsu Dai-Oh.
Appearances: Episodes 32-39, 41, 42, 45, 47, Ninnin Girls vs. Boys FINAL WARS

Ranger Key

AoNinger Ranger Key

AoNinger Ranger Key

The AoNinger Ranger Key (アオニンジャーレンジャーキー Ao Ninjā Renjā Kī?) is Yakumo's personal Ranger Key released as part of a set of Ninninger Ranger Keys in Premium Bandai. It made its debut in episode 28 of Zyuohger. The AoNinger Ranger Key was mainly used by Joe Gibken (Gokai Blue), who used it to fight as AoNinger.

Behind the scenes


Yakumo Katou is portrayed by Gaku Matsumoto (松本 岳 Matsumoto Gaku?).

As AoNinger, his suit actor is Yuji Nakata (中田 裕士 Nakata Yuji?).


Yakumo's family name is based on Katō Danzō, a famed 16th century ninja master during the Sengoku period Japan who was also known as "flying Katō" (飛び加藤 Tobi Katō?).


  • AoNinger is the first Blue Ninja Ranger with a standard blue color in a core team. The rest have been either light blue (NinjaBlue and HurricaneBlue) or navy blue (KuwagaRaiger).
  • He is the second blue ranger to have the Japanese translation of blue in his name following Aorenger.
  • His nickname, Cloud, is a pun of his original first name, Yakumo, from the kanji "Kumo" (? lit. "Cloud").
  • Yakumo is the second blue ranger in a core team to have a dragon themed main mech, with the first being Ryunosuke Ikenami (Shinken Blue).
  • Yakumo is similar to Haruto SomaIcon-crosswiki, the protagonist of Kamen Rider WizardIcon-crosswiki, who is also a wizard who had to abandon his dream of becoming a pro soccer player to fight monstersIcon-crosswiki.
  • Yakumo's magics (as well as the ones that used by other characters) are simply reversed Japanese words. This make him similar to DC Comics superheroine Zatanna, a sorceress whose spells were reversed normal sentences.
  • The unnamed magic school in England he attended is most likely a reference to Hogwarts School of Witchcraft and Wizardry from the Harry Potter francise.
  • Yakumo's use of magic could possibly be a tribute to Mahou Sentai Magiranger, a magic based sentai that aired exactly 10 years prior. Which in turn leading a guest appearance of Yakumo's temporary magic mentor, Tsubasa Ozu/Magi Yellow in some episode.
  • Yakumo's use of the Chozetsu Shoubu Changer in episode 44 makes him the only Ninninger other than AkaNinger to assume his Chozetsu form more than once.
  • AoNinger is the only male and one of only two Ninningers on the main six-man team to never once wield the Gekiatsuto, primarily used by StarNinger, the other being ShiroNinger. Coincidentally, Yakumo and Fuuka are the only Ninningers to have assumed the Chozetsu armor out of suit.


See Also


Blue Rangers

Secondary Rangers
NinjamanGunmazinSignalmanIsshuuRamirezYuko Fukui
EAGLE agentDummy Dia JackDeathdark BlueGinga BlueShadow Blue SwallowGolem
Previous TenmaRangerCopy TenmaRangerShoji's grandsonAyameZokuBlueNeziBlue
Copy TimeBlueCopyBlueShade GaoBlueWendinuFake HurricaneBlueFake KuwagaRaiger
AyameganezumiEvil MagiBlueVrilEvil Bouken BlueKarthRyuzaburoRyujiDDai-kun

Power Sets
AorengerDia JackBattle FranceDenziBlueVulSharkGoggleBlueDynaBlueBlue3ChangePegasus
Blue FlashBlue MaskBlue DolphinBlue TurboFiveBlueBlue SwallowTriceraRangerTenmaRangerNinjaBlue
OhBlueBlue RacerMegaBlueGingaBlueGoBlueTimeBlueGaoBlueHurricaneBlueKuwagaRaigerAbareBlue
DekaBlueMagiBlueBouken BlueGekiBlueGo-On BlueShinken BlueGosei BlueGokai BlueBlue Buster
Blue GorillaKyoryu BlueKyoryu CyanDeathryugerKyoryu NavyToQ 2gouAoNingerZyuoh Shark


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