Kagero

is Daiji Igarashi's inner demon who transforms into . 
==History==
===Background===
Kagero is the inner demon born within Daiji Igarashi and stems from his resentment towards his older brother, Ikki Igarashi. While Daiji admired Ikki, he felt outshined by his older brother and motivated him to enlist in Fenix. However, Ikki would go onto become a Kamen Rider when Daiji hesitated in equipping the Revice Driver. Eventually, the resentment grew stronger and his inner demon managed to take over Daiji's body.
===Peril of Kamen Rider Evil===
At the Fenix Skybase at night, the Kagero-possessed Daiji stole Hiromi Kadota's ID to steal the Lion Vistamp, that led to the creation of the Lion Deadman. During a stakeout by Fenix, Kagero would be given the Two Sidriver by George Karizaki to become Kamen Rider Evil. The mysterious Rider attacked Kamen Rider Revi and Kamen Rider Vice in his first transformation. Afterwards, Kagero later meets with the Deadmans and expressed to work together out of shared interests. 
He would continue fighting Revice as Kamen Rider Evil, all while pretending to be Daiji to the rest of the Igarashis. Fenix caught wind of Kagero's presence and deployed Hiromi Kadota as Kamen Rider Demons to subdue him. During the Igarashi's family vacation, he attacked Aguilera who was trying to assassinate Ikki, and he wanted to do the deed himself. The next day, Kagero revealed himself in front of everyone and attacked Ikki. He transformed into Evil in order to kill Ikki in front of the Igarashi family, but was forced to withdraw.
While Ikki was reluctant to fight him, Kagero began creating the Brachio Deadman by stamping a trio of scammers with the Brachio Proto Vistamp given to him by the Deadmans. When Ikki was deployed to fight him, Kagero revealed Daiji's resentment towards his brother taking away his chance at being a Rider. However, Daiji's consciousness has not completely disappeared and is waiting to fight back. Hearing this, Ikki motivated Daiji to overcome Kagero's shackles and forced the demon back into his body.
Following his defeat by Revice's Brachio Genome, Kagero would occasionally resurface to cause trouble to the Igarashi siblings. He made his return after Daiji was knocked unconscious from protecting Sakura Igarashi, though she was able to upturn him back with a Rider Kick. This phenomenon is later made known to Ikki, which he uses to summon Kagero. He would disclose the method to enter the Deadmans' base in exchange for Sakura's spicy curry.
===Battle of Light and Darkness===
After Hiromi's apparent demise, Kagero appeared to Daiji and offered to take over, that which Daiji refuses. He temporarily takes over Daiji's body to help him fight Orteca, who become the second Kamen Rider Demons, reasoning that if Orteca kills Sakura, then Kagero cannot taste her curry anymore. He boldly confronted Demons and was able to deal substantial damage to the latter. After Kagero was defeated, Daiji returned back to normal and is puzzled that his inner demon protected him.
With Giff's resurgence approaching, Kagero became more active all while Daiji begins to experience sharp headaches. When Kagero resurfaced for the last time, he confronted Karizaki to demand the Two Sidriver's enhancement item using Akemi Mikoshiba as a hostage. Director Akaishi decided to allow Kagero to take the Crow Vistamp, and he separates Daiji from himself in a battle for supremacy. The two transform and battle fiercely. However, Live gradually overwhelms Evil, and Evil strived not to hesitate despite his poor condition. After being defeated, Kagero gives Daiji the Holy Wing Vistamp before he seemingly vanished.
===The Perfect Wing===
Without Kagero to balance him out, Daiji would gradually become more brash and reckless, leading him to side with Akaishi and Giff for the sake of "justice". As Daiji attempted to form a contract with Giff, he was stopped numerous times. After Hiromi stepped in to bring Daiji back to his senses, the latter finally caved and tearfully called out to Kagero for help. As it turns out, Kagero did not completely disappear, but had himself sealed within the Holy Wing Vistamp until he was needed. Kagero returned to Daiji's body again, as the two became Kamen Rider EvilytyLive and became the decisive blow to seal Giff back to his dimension. 
When the battle was over, Ikki and Sakura warmly welcomed Kagero as part of the family. Since then, Kagero continues residing in Daiji's body and often teased his host. He would continue to operate as Kamen Rider Evil and fight alongside Ikki against Giff's demon forces. Kagero would guide Daiji as Kamen Rider EvilytyLive and ultimately join forces with the rest of the Igarashi siblings and their demons to completely destroy Giff and his forces.
==Personality==
In contrast to Daiji, Kagero is blunt, cold, manipulative and amoral, often seen with a sadistic smile. He does not think highly of his host, calling him an idiot. He is cold in demeanor and shown to be a skilled manipulator. 
Being born from Daiji's suppressed resentment towards Ikki, Kagero's ultimate goal is to kill Ikki. He often mocks his "brother" for playing the hero role, and mockingly addresses him as "Big Brother". Even so, Kagero has proven to be patient, as he was able to enjoy his stay with the Igarashi family for a moment and plan his reveal at the best possible moment. However, it is shown that he wants to be the one to kill Ikki, as he stopped Aguilera from poisoning his target, and later confronted her and the Deadmans for doing so.
Despite working with the Deadmans at first, Kagero was willing to aid the Igarashi siblings in some scenarios if it involved Sakura's spicy curry (which instantly becomes his favorite food), such as revealing the location of the Deadmans Base and even protecting Sakura from an incoming Orteca. In his last moments, he gives his host the Holy Wing Vistamp so Daiji can defeat Orteca.
After resurfacing from the Holy Wing Vistamp, Kagero finally revealed that all he did so far was to free the doubt within Daiji's heart and showed Daiji how weak he was without his aid. After Daiji accepted Kagero to be a part of him, Kagero was no longer the vile demon as he was before, but he also teasingly warned Daiji to not be a wimp or he'll take over his body again. Humorously, he also demanded Sakura's curry right after Ikki and Daiji sealed Giff back into his dimension. Kagero retains his bluntness, though, calling out the siblings regarding the harsh truth of certain situations whenever he needs to.
While active in Daiji's body, Kagero has a habit of flicking his index finger.
==Powers and Abilities==
===Powers===
*Demon Physiology: As a demon, Kagero possesses the following characteristics:
**Possession: Initially, Kagero was able to take control of Daiji's body completely, through the latter's hidden resentment towards Ikki, which was built up over time. After Daiji managed to gain control of his inner demon for the first time, the two were able to switch places whenever Daiji's physical body receives a strong enough force to knock him out and render the dominant personality unconscious. Ever since Kagero re-emerged after having been sealed into the Holy Wing Vistamp for a while, the two are now able to switch places whenever they wish. Kagero is also now able to speak from within Daiji even when he is not actively possessing his host.
**Enhanced Strength: Kagero is shown to be incredibly strong, as he was able to overpower Vice in battle and sent him flying in a single hit, and damaged Orteca when Live was not able to. After resurfacing, his strength seems to have improved drastically, as shown when he was able to defeat several Deadmans and Gifftarians easily without breaking a sweat.
**Mind Accessibility: Similar to Vice, Kagero can enter the mind of someone else and explore their hidden thoughts and emotions by touching their forehead, as was done with Keiwa Sakurai to communicate with his inner demon.
**Vistamp Ability Enhancement: Kagero can stamp himself with a Vistamp to gain various powers: 
***Bat: Separate himself from Daiji.
***Jackal: Gain a momentary burst of enhanced speed.
**Teleportation: Kagero briefly teleported behind Keiwa Sakurai to sneak up behind him and access his inner mind.
===Abilities===
*Skilled Acting: Kagero is shown to be a convincing actor, as he was able to deceive the Igarashi family into believing that he was Daiji.
*Expert Tactician: Kagero was able to formulate a plan to steal Hiromi Kadota's card, as well as the Lion Vistamp from Fenix.
===Weaknesses===
*Daiji Igarashi: Much like Vice, Kagero will die if his host, Daiji, is killed. Additionally, while Kagero's presence is strengthened by Daiji's hatred towards Ikki, the inverse can also happen as Kagero can also be weakened by Daiji's growing kindness and strength of will; this appears to have been nullified after Kagero's re-emergence, with the two having agreed to fight together as one.
==Forms==
==Equipment==
===Devices===
*Two Sidriver - Main transformation device.
*Revice Driver - Transformation device as Evil Marvelous.
*Vistamps - Transformation trinkets.
*Vistamp Holder - Carrying straps for Vistamps.
===Weapons===
*Evilblade - Personal weapon as Kamen Rider Evil.
*Livegun - Personal weapon as EvilytyLive.
*Revicelasher - Personal weapon as Evil Marvelous
==Legend Rider Devices==
==Relationships==
===Allies===
*Daiji Igarashi/Kamen Rider Live: Kagero's host. Although Kagero does not like Daiji, he is able to manipulate his host to fulfill his objectives. Ultimately, after Daiji regains control over his body and becomes Kamen Rider Live, they both resent each other. Eventually Daiji ends Kagero in their final battle as Live and Evil and gives Daiji his power, in using the Holy Wing Vistamp. Much later on, Daiji would agree that he would fight with him as one. 
*Ikki Igarashi/Kamen Rider Revi: As the manifestation of Daiji's repressed resentment towards his older brother, Evil's goal is to kill Ikki. When masquerading as Dajii, Kagero was often condescending or passively aggressive towards Ikki, mocking him for "playing the hero". Even so, Kagero did not hesitate to help him with the location of the Deadmans in exchange for food.
*(Kamen Rider) Vice: Even though both of them are demons, Kagero does not care about Vice at all, merely ignoring and pushing him away and is instead fixated on Ikki.
*Sakura Igarashi/Kamen Rider Jeanne: One of Kagero's enemies. Though Sakura has shown a dislike towards Kagero for posing as her brother, Kagero has come to develop a craving for her spicy curry, in contrast to Daiji who cannot stand spicy food. Kagero even protected her from Orteca on one instance.
*Lovekov: Sakura's inner demon.
*Genta Igarashi/Kamen Rider Vail/Kamen Rider Destream: to be added
*Yukimi Igarashi: to be added
*Hiromi Kadota/Kamen Rider Demons (I): Kagero shows disinterest towards Hiromi, although the latter (as Demons) manage to fight equally with him. Hiromi witnesses Kagero fight alongside Daiji for the first time in their new form against Giff.
*Hana Natsuki/(Kamen Rider) Aguilera: Kagero sided with Hana as Aguilera once back with the Deadmans. Despite their mutual interest, when Aguilera attempted to poison Ikki, Kagero had to save him so he could destroy Ikki himself. Kagero took offense to this attack and warned her not to do it again, after assaulting her.
*Go Tamaki/Julio/Kamen Rider Over Demons (II): Kagero sided with Tamaki back as Julio at the time.
===Enemies===
*Orteca/Kamen Rider Demons (II): After learning that Kagero revealed his location, Orteca considers him his enemy. They later fought each other after Orteca became the new Kamen Rider Demons.
*Giff: Kagero's ancestor and creator through Daiji. Kagero helps Daiji against Giff with their newfound power as they send him back where he came from.
===Others===
*George Karizaki/Kamen Rider Demons (III)/Kamen Rider Juuga: A Fenix researcher and acquaintance of his host, Daiji, who gave him the Two Sidriver and the Bat Vistamp. He later forces George to give him the Crow Vistamp, so that Daiji and him can fight each other.
==Behind the Scenes==
===Portrayal===
*Kagero is portrayed by , who also portrays his host Daiji Igarashi. As Kamen Rider Evil, his suit actor is . In episode 26 and Revice Forward: Kamen Rider Live & Evil & Demons, his suit actor is .
===Etymology===
*Kagero's name comes from the Japanese word for , as well as the suffix , a common male suffix for Japanese forenames.
*Rather than the word's typical pronunciation, the pronunciation that is used for resembles the end of the Japanese pronunciation for the word .
**Evil could also be an anagram of Revi's name etymology, , as well as the English definition of Vice.
*Evilyty is derived from the word "evility", meaning the state or instance of being evil. EvilytyLive is a palindrome, combining the words "Evil" and "Live".
===Memes===
*The Japanese fanbase would sometimes romanize Kagero as "†Kagerou†", "†KAGEROU†", or "✞KAGEROU✞", adding crosses between the names. The meme became widespread that actor Wataru Hyuga later acknowledged this trend.https://twitter.com/hyuga_wataru/status/1495190593706016772
==Notes==
*In the shooting scripts, Kagero pretending to be Daiji is referred as .https://news.yahoo.co.jp/articles/d74fd358b24144b74411a29ecc6e7ad329ab0c8d
*Series writer Hanta Kinoshita has stated that he based Kagero on a villain from a film he has yet to disclose, but was surprised to see the uncanny resemblance on-screen despite having not spoken to Hyuga regarding this.https://twitter.com/hanta_kinoshita/status/1454790718677864448
*Unlike Vice or Lovekov, Kagero does not appear to have his own form separate from his host; whenever he appeared separated from his host, he still took on Daiji's appearance. He is the first inner demon with this distinction, with the next being Devil Hana.
*Kagero was originally intended to permanently die in Episode 26 to close out Daiji's story arcs. However, the showrunners opted to continue Daiji's storyline and brought back Kagero as the plot culminated.https://www.kamen-rider-official.com/revice/45
*Despite EvilityLive being the combination of both Live and Evil's powers, Kagero continues to exhibit a preference of switching back to Evil whenever he takes control in battle.
==Appearances==
==Navigation==
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