This article is about a/an rider in Kamen Rider Kiva.

Kengo Eritate (襟立 健吾 Eritate Kengo) is one of the Ixa System's users. He assumed the title of Ixa after Keisuke Nago is injured in action.

Kengo Eritate

He is an independent rock guitarist and vocalist from Tokyo who lied about coming from Osaka out of shyness. Although he formed a band called IKEMENS (イケメンズ Ikemenzu), other members got tired of his character and dropped out. After that, he befriends Wataru, who joins his band along with Shizuka; Kengo aims at the major debut as a new IKEMENS as part of his lifelong dream to be a rockstar, even playing the series' insert theme Destiny's Play in a small concert. Though he learns that Wataru's lifelong dream is not like his, Kengo remains Wataru's friend as the two promise to help each other out with their dreams. However, when nearly devoured by the Rhinoceros Fangire, Kengo encounters Kiva and begins to idolize him and then Keisuke after seeing him fight the Ladybug Fangire, wishing to be the latter's apprentice. When he is deputized as a temporary Fangire Hunter, Kengo has to be hospitalized after shoulder and hand injuries from fighting the Crab and Cicada Fangires when his chain whip is knocked back at him.

Once released from the hospital, he learns that due to his injuries, he can no longer play the guitar, and as a result, gets angry at Wataru from hiding this truth from him. The rage gets worse when Kengo overhears Nago naming Wataru his apprentice instead of him, with Kengo being taken under Shima's wing and made into an official Fangire Hunter, now bitter and harsh with no respect for Nago and very distrustful of Wataru. He even went so far as to cut and dye his hair back to black, along with discarding the Kansai accent he used to maintain the charade of being from Osaka. When Nago is injured in action, Kengo eagerly takes his place as the Ixa System's user. However due to the incident where Kiva's Fangire nature takes over, Kengo is forced to return the Ixa System back to Nago after he attempted to redeem himself by fighting the Seamoon Fangire and almost getting killed by the Bishop. Kengo, in a last-ditch effort to bring back Wataru to battle, plays his guitar with what ability he has left and then begs Wataru to come back, apologizing for his recent behavior and coming clean about why he behaved like he did recently. It was not that much because of Wataru hiding the fact that he could no longer play the guitar from him, but that he needed to blame someone for his own weakness - he was actually relieved that he could no longer play the guitar as he eventually knew that he has little talent in music, but could not live with himself as someone who gave up on his dreams. At first, Wataru initially refuses, stating that he cannot be friends with anyone due to his heritage, but after Wataru returns to being Kiva, he relents and both he and Kengo become friends again. He later is a guest in Nago's wedding and helped carry the presents to the wedding.

Kamen Rider Ixa

Save Mode
KR-IXA SaveMode

Save Mode

"Fist On!"
―Transformation announcement[src]
  • Rider height: 218 cm
  • Rider weight: 160 kg
  • Ability perimeters:
    • Punching power: 4.2 t.
    • Kicking power: 1.8 t.
    • Maximum jump height: 18 m.
    • Maximum running speed: 100 m. per 9.6 sec.

Save Mode (セーブモード Sēbu Mōdo) is the default form of Ixa. When Ixa is used by Nago this mode is often bypassed altogether and he transforms directly into Burst Mode.

Appearances: Kamen Rider Kiva Episode 38-40

Burst Mode
KR-IXA BurstMode

Burst Mode

"Fist On!"
―Transformation announcement[src]
  • Rider height: 220 cm[1]
  • Rider weight: 160 kg[1]
  • Ability perimeters:
    • Punching power: 7 t.[1]
    • Kicking power: 3 t.[1]
    • Maximum jump height: 30 m.[1]
    • Maximum running speed: 100 m. per 6 sec.

Burst Mode (バーストモード Bāsuto Mōdo) is Ixa's attack mode, where Save Mode's visor opens up to reveal Ixa's eyes. A wave of intense heat is produced when Ixa transforms into Burst Mode from Save Mode.


  • By inserting the Knuckle Fuestle into the Ixa Belt and pressing the Ixa Knuckle, Ixa can perform the Broken Fang (ブロウクン・ファング Burōkun Fangu) finisher.
  • By inserting the Calibur Fuestle into the Ixa Belt and pressing the Ixa Knuckle, Ixa can use the Ixa Calibur to perform the Ixa Judgement (イクサ・ジャッジメント Ikusa Jajjimento) finisher. When performing the Ixa Judgment, a vision of the sun appears behind Ixa.

Appearances: Kamen Rider Kiva Episode 38-40

Rising Ixa
KR-IXA Rising

Rising Ixa

―Transformation announcement[src]
  • Rider height: 215 cm[2]
  • Rider weight: 120 kg[2]
  • Ability perimeters:
    • Punching power: 20 t.[2]
    • Kicking power: 12 t.[2]
    • Maximum jump height: 70 m.[2]
    • Maximum running speed: 100 m. per 3 sec.[2]

Kamen Rider Rising Ixa (仮面ライダーライジングイクサ Kamen Raidā Raijingu Ikusa) is the upgrade to Ixa System, known as Intercept X Attacker Ver. XI. As it is the perfected version, Ixa's power is at maximum strength. This mode is accessed through the new Ixariser and the Ixa Knuckle Ver.XI. After inputting a code into the Ixariser, Ixa's outer armor is ejected, exposing Ixa's core, the head crest changes once again, and the white parts of Ixa's remaining armor turn blue. Towards the end of the series the Ixa system receives a final upgrade that allows Nago to transform directly into Rising Ixa, with the projection being blue instead of gold.

By removing the Riser Fuestle from the grip of the Ixariser before inserting it into the Ixa Belt and pressing the Ixa Knuckle, Ixa can perform the Final Rising Blast (ファイナルライジングブラスト Fainaru Raijingu Burasuto) finisher.

Appearances: Kamen Rider Kiva Episode 38-40

Behind the scenes


Kengo Eritate is portrayed by Kouhei Kumai (熊井 幸平 Kumai Kōhei). As Kamen Rider Ixa, his suit actor was Jiro Okamoto (岡元 次郎 Okamoto Jirō).


  1. 1.0 1.1 1.2 1.3 1.4 "TV Asahi's page for Ixa Burst Mode". 
  2. 2.0 2.1 2.2 2.3 2.4 2.5 "TV Asahi's page for Rising Ixa". 
Wataru Kurenai - Kivat-bat the 3rd - Demon Imperial Dragon Tatsulot - Castle Doran - Shoodoran
The Arms Monsters: Jiro - Ramon - Riki
Gear: Kivat Belt - Fuestles - Demon Imperial Sword Zanvat Sword - Machine Kivaa
2008: Mamoru Shima - Keisuke Nago - Kengo Eritate - Megumi Aso
1986: Otoya Kurenai - Yuri Aso
The Fangires
The Checkmate Four:
1986: Queen I - King I
2008: Bishop - Rook - King II - Queen II
Pawns: Horse Fangire - Octopus Fangire - Moth Fangire - Sheep Fangire - Ryo Itoya - Prawn Fangire - Frog Fangire - Earwig Fangire - Rhinoceros Fangire - Seastar Fangire - Ladybug Fangire - Chameleon Fangire - Grizzly Fangire - Shark Fangire - Crab Fangire - Cicada Fangire - Warthog Fangire - Moose Fangire - Horsefly Fangire - Rat Fangire - Mantis Fangire - Seamoon Fangire - Silkmoth Fangire - Polar Bear Fangire
Takato Shiramine - Takashi Sugimura
Mummy Legendorga - Medusa Legendorga - Mandrake Legendorga - Gargoyle Legendorga - Antlion Legendorga
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