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Aihana Etsu (藍花 悦 Aihana Etsu?), also referred to as the Number Six (第六位?), is the sixth ranked Level 5 esper in Academy City. A recurring joke in the series is the mystery surrounding their identity.
The three kanji for Aihana Etsu's name mean "indigo", "flower", and "pleasure", respectively.
Due to the nature of their power, Aihana claims that they can't actually do all that much or bring about justice on their own, and that they constantly think about who they can side with to ensure that the 'good guys' win and the villains don't get the last laugh, lending out their name as part of that. They step in when they decide that the selected good person cannot win without their help, press them into accepting their offer, and after granting them the name Aihana Etsu and their 'ideal self', leaves them to resolve the problem, claiming that it is something they need to do themselves otherwise it would be meaningless.
While they consider themselves to be acting in peoples' best interests, their attitude has been noted to be quite arrogant and self-righteous, looking down on other people, and rejecting their own possibilities from the start. They press people to take their offer and name, and at least once, on being refused, stated that it was their decision and asked the target what made them think they had the right to refuse. They have also been noted to stay in their own safe zone and benefit while others faced the risks, putting in little work or effort themselves. Aihana's behavior has been compared to setting up a camera, stepping in to help and then posting an edited version of the video to a site to make themselves look like a success, and looking down on others as no more than dolls they can play with, with Kamijou Touma calling it a perfect example of what a Level 5 shouldn't be.
Aihana dislikes violating their own principles, and has a negative view of hypocrites and those who 'refuse to pick a side', considering Touma as one of them and not a good person for the contradictory path he walks where he talks of the goodness of human nature but cannot abandon the violence of his fist. When asking what power someone would like to be given, Aihana claimed that they could not be proud of it since they can't actually "create" it, apparently with a bitter smile, while adding how they couldn't actually do all that much due to the nature of their ability. Faced with refusal and someone whom they believed would definitely lose and die, a slight change was noted in their voice, described as though recalling a history of repeated failure. They were angered when faced with someone whom they considered stubborn, repeatedly refusing their offer and sticking to usual pattern of behavior when Aihana had chosen to break their own rules to make that offer.
Shinyaku Toaru Majutsu no Index
Agitate Halation Arc
- Main article: Agitate Halation Arc
During the riots in Academy City's Learning Core involving 7,500 "heroes", a group of people assume that a boy claiming to be Aihana Etsu is the Number Six since he defeated them with only his fists and without any apparent ability. Shokuhou Misaki, noticing him, claims that he is pretending to be the Number Six Level 5, and therefore has no connection to her, indicating that she probably knows the real Aihana Etsu.
In the conclusion of the arc, Kihara Noukan states that "the Level 5s gathered in one place", hinting either that the real Aihana Etsu actually was present in Learning Core, that Noukan was simply only referring to the other Level 5s, or that Noukan was fooled by the impostor's acting.
Magic God Othinus Arc
- Main article: Magic God Othinus Arc
Aihana officially debuts in person in this arc, though their features are kept nondescript and they are referred to as the Number Six rather than by name. When Academy City sends an email to the seven Level 5s "requesting the death of Magic God Othinus and Kamijou Touma who is traveling with her", Aihana silently toys with the phone.
St. Germain Arc
- Main article: St. Germain Arc
Following the events at the Dianoid, during which Kanou Shinka made use of Aihana's name, the real Aihana speaks with Yokosuka, who has been assisting Aihana (hoping that he could learn how to beat Sogiita Gunha) with their plans of helping people solve their problems by allowing them to use Aihana's name as the sixth ranked Level 5 on Aihana's behalf, Yokosuka having passed the name on to another.
Souyaku Toaru Majutsu no Index
Christmas Day Arc
- Main article: Christmas Day Arc
On Christmas Day, Aihana Etsu approached the heavily injured and dying Kamijou Touma, who was attempting to leave hospital to stop Anna Sprengel, despite his condition. Though they had negative view of Touma and had avoided making contact before then, Aihana apparently deemed supporting Touma with their power the best choice for fighting R&C Occultics. They attempted to have Touma take on their name and grant him power like they usually did with others, but Touma rejected their 'offer' and called out their attitude. Both unwilling to budge, Aihana stood in Touma's way and was quickly knocked out.
Toaru Kagaku no Railgun
Daihasei Festival Arc
- Main article: Daihasei Festival Arc (Railgun)
The Number Six was mentioned when Yamane, who is part of a group tasked with convincing the seven Level 5s to hold demonstrations during the Daihasei Festival, tried to track them down, but was unable to find any trace of them.
Toaru Jihanki no Fanfare
- Main article: Toaru Jihanki no Fanfare
Aihana Etsu is mentioned when a pirated broadcast lists off the epithets of the seven Level 5s. Humorously, they are introduced as "Eh, who's that Number Six...? Well, forget about it".
Aihana's ability allows them to give others power and make them into their 'ideal self'. The exact mechanisms at work are not entirely clear, but by having their target accept their offer and picture their ideal self, the version of themselves that they wish to be, Aihana can apparently make them become that ideal self, granting them the power they wish for. It has been compared to instantly transforming anyone into a protagonist without any annoying training or levelling up.
The process is affected by several factors, one of which is the target's imagination. Aihana generally does not give suggestions as they would narrow the imagination. According to Aihana, although they can give someone power, they can't say they actually 'creates' the power. It may also be limited by certain external conditions. Aihana lends people the name and identity of Aihana Etsu when aiding them, either directly or indirectly, by themselves or through a proxy. Whether this is a necessary part of the empowerment process is not fully confirmed.
When trying to get Kamijou Touma to accept their offer, Aihana gave an example of what their power might be able to accomplish - pointing to the whistle which Touma had received from Shokuhou Misaki, which and whom he could no longer remember. Aihana claimed that if Touma wished to know the meaning behind the whistle or was interested in recovering his lost memories, he could do it as long as he arranged the necessary conditions in the city. Aihana also claimed that it was more convenient than what Rensa had.
The nature of this ability is not one suited for direct combat, meaning Aihana has to use or work with others to achieve their goals. When forced to step outside of their safe zone and face an injured Kamijou Touma in a physical clash, they were easily knocked out.
When Aihana approached the ravaged Kamijou Touma, the latter experienced audio and visual distortions in his perception of his surroundings. As he was descending the stairs (which seemed not to change no matter how many flights he went down), he felt a sensation described like walking on fluffy clouds, with light blurring and the deafening noise around him becoming distorted. When Aihana appeared on the landing before him and spoke, Touma was fairly sure they had not been there before and he could only see a vague outline, like a scene filmed through an out-of-focus video camera. At the same time, the surrounding noise disappeared. When he tried to slip past and descend the next flight of stairs (not seeming to make progress), he found Aihana waiting for him on the next landing (even after placing his right hand to his head). After Aihana's introduction, the visual distortions spread out with the walls and floors (which had calming colors for the benefit of patients) flashing with bright colors and stairs starting to bend and undulate. The illusion disappeared after Aihana was knocked out.
Aihana's voice during this encounter was described as a genderless soprano, likely intentionally modified to make it difficult to discern with a distortion sometimes running through it, which dropped terrifyingly deep when angered.
- In Toaru Majutsu no Index Volume 3, Kamijou Touma stumbles upon the esper names of the seven Level 5s in documents related to the Level 6 Shift project, but he skips past those names.
- Some fans speculate that the Number Six is Aogami Pierce (thus making "Aihana Etsu" his real name), since pre-memory loss Touma considered him and Misaka Mikoto "tough people who he would not have to worry about getting involved" in the trouble revolving around Index.
- Hints and piece of information regarding Aihana Etsu and their ability, prior to 2014, have included:
- As with the other Level 5s except Accelerator, Aihana cannot achieve a stable Level 6.
- As Rensa can utilize Aihana's ability (as well as those of the other Level 5s apart from Sogiita Gunha's currently unexplainable power), it can be inferred that their ability can be scientifically explained and reproduced.
- Given narration and Accelerator's thoughts, Aihana's ability is not a wind-related power.
- Given comments concerning Misaka Mikoto's selection for the demonstration at the Russian Shopping Center, it could be inferred that, like the other Level 5s, they don't have a reasonable personality.
- Level 5s have been described as having enough power to fight evenly with an army, so it has been assumed that Aihana was capable of this in their own way.
- After the release of Shinyaku Toaru Majutsu no Index Volume 7, there was confusion over whether the name "Aihana Etsu" was the Number Six's real name or just the impostor's name. In Shinyaku Toaru Majutsu no Index Volume 12, Yokosuka confirmed it as the former.
- Aihana uses the first-person pronoun "boku" (僕?).
- "Now, picture the you that you wish to be. Picture your ideal self.”[...]“You can be that version of yourself. Now, I will lend you Aihana Etsu."
- ↑ 1.0 1.1 1.2 1.3 1.4 Shinyaku Toaru Majutsu no Index Light Novel Volume 12 Epilogue
- ↑ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 2.11 2.12 2.13 2.14 2.15 2.16 2.17 2.18 2.19 2.20 2.21 2.22 2.23 2.24 2.25 2.26 2.27 2.28 2.29 2.30 2.31 2.32 2.33 2.34 2.35 Souyaku Toaru Majutsu no Index Light Novel Volume 02 Chapter 3 Part 5
- ↑ Shinyaku Toaru Majutsu no Index Light Novel Volume 07 Chapter 4 part 5
- ↑ Shinyaku Toaru Majutsu no Index Light Novel Volume 07 Epilogue
- ↑ Shinyaku Toaru Majutsu no Index Light Novel Volume 10 Prologue
- ↑ Toaru Kagaku no Railgun Manga Chapter 043
- ↑ Toaru Jihanki no Fanfare
- ↑ Toaru Majutsu no Index Light Novel Volume 03 Chapter 2 Part 8
- ↑ Toaru Kagaku no Railgun Manga Chapter 064
- ↑ Shinyaku Toaru Majutsu no Index Light Novel Volume 07 Chapter 3 Part 8
- ↑ Toaru Majutsu no Index Light Novel Volume 03 Chapter 4 Part 8
- ↑ Toaru Kagaku no Railgun SS2: Shopping Mall Demonstration Chapter 1 Part 2
- ↑ Toaru Majutsu no Index no Subete The Wall Between Level 3 and Level 4
|The Seven Level 5 Espers of Academy City
|#1 - Accelerator||#2 - Kakine Teitoku||#3 - Misaka Mikoto||#4 - Mugino Shizuri|