In an act of revenge, she gains a Sengoku Driver and is able to become Kamen Rider Idunn using the Ringo Lockseed. Touka was among the list of children in Zawame Children's Nursery where they were part of a lethal experiment led by Amagi Kureshima that allowed them to control Helheim at will. In her teenage years, she was hired by the Kureshimas as a maid servant. She became close friends with Takatora during her time as a maid/servant, which she baked an apple pie for her close friend.
Publication Information
- Protagonist : Touka Akatsuki
- Japanese : 朱月 籐果
- Rider Users : Armored Rider Idunn
- Gender : Female
- Season : Kamen Rider Gaim
- Homeworld : Earth
- First Appearance : Kamen Rider Gaim Gaiden : Kamen Rider Zangetsu
- Last Appearance : Kamen Rider Gaim Gaiden : Kamen Rider Zangetsu
- Number of Appearances : 1 (movie) Sayuri Iwata,Ai Uchida (teen)
- Main View : Full Movie
Years later, Touka reunites with Takatora and she spends her time with the Kureshima brothers for a short while, however, she tells the Kureshima brothers that their father had passed away. Unknown to them, she gained a Sengoku Driver and a Ringo Lockseed to become Kamen Rider Idunn.
Arms
Like with the other Armored Riders, Kamen Rider Idunn's forms are called Arms. Her Sengoku Driver plays European trumpet music and announces "Come On" before every transformation, while her personal Lockseeds are styled in pure English that is sung in a chorus-like manner. By pressing the Sengoku Driver's Cutting Blade down on the Lockseed after transforming from one to three times, Idunn can activate one of three finishing moves based on her current Arms form: Squash, Au Lait, or Sparking.
Idunn Ride Wear
- Idunn Ride Wear
- Armored Rider Idunn Ride Wear is Idunn's default form undersuit which is briefly seen during Idunn's transformation sequence, before the Armor Part attaches or when she changes Arms. However, this form is completely vulnerable to any incoming attacks when shot at directly in the suit, rather than at the Arms that is descending down on the Rider.
- The Ride Wear that Idunn's Sengoku Driver has is easily identifiable through the Rider Indicator. The Rider Indicator only identifies what Ride Wear a Sengoku Driver contains for simplicity and can be replaced with extensions.
Idunn Ringo Arms
- Idunn Ringo Arms
- Come On! Ringo Arms: Desire Forbidden Fruits! ― Transformation announcement
- Appeareance : Kamen Rider Gaim Gaiden : Kamen Rider Zangetsu
- Ringo Arms is Idunn's default apple-based armored European Knight form, which is accessed through the Forbidden Ringo Lockseed.
- While assuming Ringo Arms, Idunn dons the Ringo Armor Part and her Arms Weapons are the Sword Bringer and Apple Reflecter.
- As Idunn, Touka was able to fight off against the Kurokage Troopers and even had the advantage against Zangetsu Watermelon Arms. However, this form is still inferior to that of a New Generation Rider and Touka was quickly defeated by Zangetsu Shin.
- After Touka's death at the hands of Ryoma Sengoku, the Forbidden Ringo Lockseed was given to Kaito Kumon who promptly destroyed it after his battle against the Tyrant Over Lord.
- Forbidden Ringo Lockseed
- Allows Idunn to transform into Ringo Arms, equipped with the Sword Bringer and Apple Reflector. This Lockseed possesses Helheim powers that could turn the user into an Inves, in which it turns out to be the first Lockseed that Ryoma Sengoku had invented.
- Its effects are also similar to Yomotsuheguri Lockseed, according to Ryoma. It is given to Touka who used it to transform into Kamen Rider Idunn, as she was part of a lethal experiment to allow passage into Helheim.
- Ryoma Sengoku defeats and kills her, and then has Yoko Minato give it to Kaito for use.
- Its code is LS-TABOO.
- Another copy of Forbidden Ringo Lockseed also appeared in Gaim Gaiden: Kamen Rider Duke, in which it was already damaged and it was found by Yoko Minato in Kugai Kudo's apartment before giving it to Ryoma as an evidence.
- This said Lockseed was originally used as a test object when Kugai Kudo, being a test subject, allegedly died in a Lockseed creation accident.
- The DX toy was only sold with limited editions of the Kamen Rider Gaim Gaiden V-Cinemas.
Abilities
While temporarily in the possession of Forbidden Ringo Lockseed, Touka had these following abilities, following her mutation into Inves. Among them are:
- Crack Creating : Touka can create Cracks freely as means of transportation or sneak attacks. The location of the Crack she creates sometime emits Helheim floras.
- Helheim Plant Manipulation : Touka can manipulate Helheim plant vines freely but never done it as means of attacking her targets.
- Devices
- Arms Weapons : Weapons that come with the Arms:
