Movie poster.
Tropes
- Action Girl: Even without transforming, Touka briefly demonstrated considerable martial arts skills when she ambushed Takatora.
- Combat Tentacles: Subverted. Idun is shown to be able to manipulate Helheim vines just like the Overlords, but she never uses them in battle.
- Death Seeker: When Touka is defeated by Takatora, she seems to be egging him on to kill her, saying that she would return and try to kill him again if he spares her. He can't bring himself to do it, but Ryōma, on the other hand…
- Did They or Didn't They?: Taking the Kissing Discretion Shot mentioned below into consideration, Takatora's actor mentioned in an interview for the special that there would be some "very wet" bed scenes.
There are no such scenes in the final product, but the fact that Takatora and Tōka have a tender moment at her house implied to lead to at least a kiss makes one wonder… - The Dog Bites Back: Years of Touka being painfully experimented on by Amagi Kureshima were repaid with death.
- Double Feature: Was released as part of the first Gaim Gaiden set alongside Kamen Rider Gaim Gaiden: Kamen Rider Baron.
- Evil Cannot Comprehend Good: Touka doesn't understand that Takatora spared her because of his bond with her. Ryoma on the other hand is more willing to do so. However, it's partially averted in that she recognizes that Takatora was a good person despite everything else.
- Expy: Idun's Ringo Arms is basically a copy of Mars' Golden Arms, using the same fruit and armaments.
- Its design is slightly more reminiscent of Kamuro's Silver Arms, while Kaito's version of Ringo Arms resembles Mars more.
- Good Counterpart: Touka to Ryoma. Both come from the same facility, which explains how both are screwed up. But while the experimentation removed anything human in Ryoma, Touka's revenge, however extreme and misguided, is aimed at paying Yggdrasil back for their inhumanity, and she is still genuinely fond of Takatora, cherishing their childhood together.
- Green Thumb: Touka can control Helheim flora much like an Overlord.
- Kissing Discretion Shot: There's a scene where Takatora and Touka look like they're about to kiss at her house, but the camera pans down to a fence post blocking the view. Said fence post is tangled in Helheim vines.
- Lethal Chef: A downplayed example. It's commented by Takatora that Touka's apple pies are terribly made, though he still eats them out of affection for her and appreciation for their friendship.
- Meaningful Name: Iðunn was a Norse goddess who held the fruit that the gods used to stay young.
- Her Rider name can also be read as Eden, alluding to another forbidden fruit myth.
- Roaring Rampage of Revenge: Touka wants vengeance against the Yggdrasill Corporation and the Kureshima family.
- Sadist: The expression on Touka's face when recounting her murder of Amagi Kureshima shows that she thoroughly enjoyed getting her revenge. That she chooses to target everyone connected to him, not just the man himself, calls into question just how much of her motives are rooted in revenge.
- Ship Tease: Touka with Takatora.
- Thinking Up Portals: Idunn's Lockseed gives her the power to open and manipulate Cracks to and from Helheim, which she uses to make quick escapes and get the drop on her targets.
- Tragic Monster: While Touka does want to bring Yggdrasill and the Kureshimas down, she does genuinely cherish her time with Takatora and in her dying moments, thinks back to said moments and laments that someone like Takatora had to be of the Kureshima family and Yggdrasill.
- Unwitting Pawn: In a similar way to Tyrant mentioned below, Tōka ended up serving as a test subject for one of Ryōma's experimental prototype lockseeds. In her case, her successful use of the Forbidden Ringo Lockseed's powers helped him prove that the Golden Fruit does indeed exist.
