Kī Saegusa
Screen Shot 2014-02-20 at 8.32.47 PM
Kamen Rider Kurokage
Kamen Rider Den-O Ax Form
Gender: Female
Series: Aikatsu!
Motif: Pinecone
Homeworld: Earth
First Appearance: Super Sentai x Kamen Rider x Metal Hero x Tomica Hero x Pretty Cure All Stars Featuring Aikatsu!
Number of Episode
3 (movies)
Full list of appearances
Actor: Chuna

Kurokage Jounouchi

Kamen Rider Kurokage

Den-O 10 05

Kamen Rider Den-O Ax Form

―Kī's main catchphrase.

Kī Saegusa (冴草 きい Saegusa Kī?) is one of the main characters who appears in the 2014 Series of the Data Carddass Aikatsu! game and the related anime adaption for it (season 2) along with Seira Otoshiro.

She is announced as the Leader of the Cool Angels in episode 70.



She has bright blonde hair with balloon-like twintails with a green ribbon on each twintail, and her eyes are blue.


As a pop-type idol, she used to make a pun of words, she usually says some words three times before finishing it properly.



Ki first appeared during Seira's debut, attempting to keep Seira from telling Aoi her entire background. Instead, Ki ended up announcing all the 'secrets' that she wanted to release one at a time to keep Seira mysterious. During her childhood, Ki was very shy and had no friends. At first she was Seira's producer but later on, she became an idol as well.

Rider Powers

Like with the other Lockseed-using Kamen Riders, Kamen Rider Kurokage's forms are called Arms (アームズ Āmuzu?). Only in movie of Super Hero Taisen X, she briefly transformed into Kamen Rider Den-O Ax Form after possessed by Kintaros.

Tumblr inline n0nrk7VRF41qk32ya

Kurokage Pre-Arms

This form is briefly seen during Kurokage's henshin sequence, before the armor attaches.

Matsubokkuri Arms

Matsubokkuri Arms

"Soiya! Matsubokkuri Arms! Ichigeki in the Shadow!"
―Transformation announcement[src]

Matsubokkuri Arms (マツボックリアームズ Matsubokkuri Āmuzu?, lit. Pinecone Arms) is Kurokage's default black form. Accessed through the Matubokkuri Lockseed, this form's personal weapon is the Kagemasu.

Ax Form

Ax Form

"Ax Form!"
―Transformation announcement[src]
  • Height: 185cm
  • Weight: 93kg
  • Punching power: 8t
  • Kicking power: 5t
  • Maximum jump height: 30m
  • Maximum running speed: 100m/7s

Kī was also once possessed by Kintaros, who then used the Den-O belt to transform into Ax Form.


  • She might be a half-foreign, given her blonde hair and blue eyes
  • Her star sign is Sagittarius.
  • Kī is known as "A Great Producer" and entrusted to helping Seira for her first debut.
  • She is the fourth idol not to wear her basic coord at her debut.
  • Her aura is composed of a single toy alicorn that wears a pearl necklace and bubbles filled with stars and smaller bubbles
    • The alicorn in Kī's aura bares a striking resemblance to Opal from Jewel Pet.
  • She shares her singing voice with Kaede Ichinose and Shion Kamiya.


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