History Fanfic / ACertainMentalIsekai

* WowingCthulhu: Misaki's actions [[such as willing to risk her life for the sake of Sisters, despite her powers being ill-suited to take him on, or actually landing a hit on him]] have made an impact on Accelerator to the point where she's one of the few people he genuinely respects. Misaki's tactics and successes inspire him to be a bit more of a GuileHero as well.

* AdaptationalHeroism: Kouzaku "Michan" Mitori is an example of this. During her Clone Dolly days, Misaki found out about Mitori's predicament and orchestrated her release from confinement and consequent reunion with Dolly. As such, Michan was able to get closure and live a somewhat normal life and never fell into the clutches of the Dark Side.

* AdaptationalHeroism: Kouzaku "Michan" Mitori is an example of this. In this story Misaki found out about her predicament and orchestrated her release from confinement and consequent reunion with Dolly. As such, Michan was able to get closure and live a somewhat normal life and never fell into the clutches of the Dark Side.

** Zig-zagged in Misaki's case. Unlike her canon counterpart, she eschews physical mnemonic devices; instead, she uses entirely mental mnemonics akin to a command line interface. While less dependent on external devices and more flexible, this makes her noticeably slower on the draw than her fellow Level 5 espers (or canon Misaki), taking multiple seconds to set up and execute an attack or command. At the same time, this also makes it impossible to disarm her or tell whether she's using her powers or not. Misaki's psychometry and mind control skills have also been somewhat neglected; at the beginning, she's less powerful than her canon counterpart, but she makes up for it with long-range, non-line-of-sight mind reading and intelligence gathering and [[JackOfAllTrades greater flexibility]].
** Michan has to make do with oobleck instead of her preferred liquid metal mixture, as the black mark on her record, caused by her interference with Clone Dolly, has made it impossible for her to acquire the latter outside the school or use it without attracting srcutiny. While oobleck is serviceable enough, it's still inferior. During the story's second arc, she manages to obtain some liquid metal [[spoiler: from a downed Coffin]] for later use.
* NeuralImplanting: Misaki uses this to acquire new skills and knowledge. She will readily steal any knowledge that's relevant to using her powers (neurology, biology and mathematics), her hobbies (drawing skills, cooking recipes) or physical skills, such as ambidexterity. As per the word of the author, she has also used it to adjust her habits and improve her work ethic; as such, procrastination is not a concern for her.

** Misaki is supporting the school's "Competitive Ambulation Club" to have an excuse to wear sportswear for non-competitive jogging and running (as the actual running club is taken). A number of Tokiwadai students are members as well.

* MakeItLookLikeAnAccident: This is how the SI got rid of Exterior [[spoiler: along with senior research staff]]. The trope is subverted, however, as the powers-that-be and Dark Side actors are well aware that she is responsible.

* WowingCthulhu: Misaki's actions [[such as willing to risk her life for the sake of Sisters, despite her powers being ill-suited to take him on, or actually landing a hit on him]] have impressed Accelerator greatly to the point where she's one of the few people he respects and expresses concern about. Misaki's tactics and successes inspire him to be a bit more of a GuileHero as well.

* AdaptationRelationshipOverhaul: Misaki and Mikoto. As Misaki is less aggressive and haughty here, their rivalry is less pronounced than in canon. Though Misaki is rather wary of Mikoto for several reasons, this is entirely one-sided, and their relationship eventually evolves into a friendship.

* TookALevelInKindness: Over the course of the year that she spent in Misaki's clique, Tatsuki Mirei turned from a budding MadScientist into a kinder, more compassionate person.

* WiseBeyondTheirYears: Because of her foreign memories and accumulated life experience, Misaki is mentally more mature than her age suggests. Consequently, she also holds herself to much stricter standards of behaviour than she does her peers, and she takes her obligations, self-imposed or otherwise, very seriously. The downside to this is that it makes it harder for her to treat fellow children as equals or connect to them.

''A Certain Mental Isekai'', written by Eotyrannus, is a [[SelfInsertFic self-insert fanfiction]] of ''Literature/ACertainMagicalIndex'', with some caveats.

The story and discussion thread can be found [[https://forums.spacebattles.com/threads/a-certain-mental-isekai-raildex-si.1082283/ on Spacebattles.com.]]

* RoaringRampageOfRescue: [[spoiler: Hokaze rescuing a brainwashed Misaki and an increasingly unstable Ayu who's struggling to control her.]] She takes on a [[spoiler: Mental Out]] who is quickly progressing towards Level 6, while having to dodge shots from subverted espers [[spoiler: including Sogiita, Accelerator, Meltdowner and Maidono]] at the same time by herself... and wins nonetheless.

** [[spoiler: Ayu]] was hit even worse than Misaki with this. Even before the events of the main plot, being separated from her friends at Clone Dolly: Ideal, resentment of Misaki and being under the patronage of [[spoiler: Kihara Gensei]] has resulted in a bitter, hateful and unstable person. However, during [[spoiler: Misaki's Level 6 Shift]] her sanity unravels further as her plans get derailed and [[spoiler: Misaki]] fights her influence. Eventually, all she can talk about is her hatred for Misaki.

* ThePowerOfHate: Played with. [[spoiler: Mitsuari Ayu]] calls her hatred the power that will let her prove she's worth something.

** [[spoiler: Ayu]] was hit even worse than Misaki with this. Without the support of her friends from Ideal (though she has ), her trauma over the horrors of Ideal continued to fester, leading her to mentally deteriorate until she goes insane enough to agree to a plan with Kihara Gensei, and starts raving about imaginary evils Misaki is responsible for to Junko in a call.

* DidYouJustPunchOutCthulhu: Misaki versus [[spoiler: the Taowu]]. Not only does she coordinate her teammates' efforts, she is also the one to disable the entity and finish it off.

* {{Nerf}}: Zig-zagged.
** Unlike her canon counterpart, Misaki eschews physical mnemonic devices. Instead, she uses entirely mental mnemonics akin to a command line interface. While less dependent on external devices and more flexible, this makes her noticeably slower on the draw than her fellow Level 5 espers (or canon Misaki), taking multiple seconds to set up and execute an attack or command. At the same time, this also makes it impossible to disarm her or tell whether she's using her powers or not. Misaki's psychometry and mind control skills have also been somewhat neglected; at the beginning, she's less powerful than her canon counterpart, but she makes up for it with long-range, non-line-of-sight mind reading and intelligence gathering and [[JackOfAllTrades greater flexibility]].
** Michan has to make do with oobleck instead of her preferred liquid metal mixture, as the black mark on her record, caused by her interference with Clone Dolly, has made it impossible for her to acquire the latter outside the school.

* BrainwashedAndCrazy: [[spoiler: Shokuhou after Ayu successfully unbalances her enough emotionally to lower her AIM defenses and hit her with Mental Stinger. Turns out, rewriting someone who already was traumatized by the city into remembering everything horrible that Academy City did to her and other children doesn't result in a stable, healthy individual.]]

* RoaringRampageOfRevenge: [[spoiler: A brainwashed Misaki]] goes berserk on the sociopathic scientists of Academy City as payback. She repeats what she did at [[spoiler: Exterior]] over and over, filling up buildings with scientists and crashing them down over and over to smash the residents into paste. She starts using mind control on an incredible scale, and then uses her hydrokinesis to turn the clouds in the sky into a hybrid pressure cutter/laser, which she then proceeds to start firing at the city.

* ThePowerOfHate: Played with. [[spoiler: Mitsuari Ayu]] calls her hatred the power that will let her prove she's worth something.
* ThePowerOfFriendship: Hokaze uses her desire to save Misaki as the final stimulus she needs to overcome her fear, and break the barrier of intense pain that stopped her so many times before, to [[spoiler: become a Level 5]]. She even uses this as a rebuttal to [[spoiler: Ayu]], and states that it's the reason she's become so much stronger than anything the latter can throw at her.

The story follows Shokuhou Misaki, one of Academy City's Level 5 espers, as she goes through her life, and she has got many concerns. Besides studying and dealing with school politics, she has to contend with her so-called "rival" that she has reasons to be wary of. At the same time, she is increasingly aware of the city's darker side and has to deal with the ghosts of her past, and that's not to mention various nefarious plots.

** Unlike her canon counterpart, Misaki eschews physical mnemonic devices. Instead, she uses entirely mental mnemonics akin to a command line interface. While less dependent on external devices and more flexible, this makes her noticeably slower on the draw than her fellow Level 5 espers (or canon Misaki), taking multiple seconds to set up and execute an attack or command. Misaki's psychometry and mind control skills have been somewhat neglected; as such, she is less powerful in these fields than her canon counterpart. For example, when it comes to full mind control, she can control only up to five people at a time.
** She doesn't have Exterior at her disposal, as she destroyed it before it could be brought online.
** Misaki also has no intelligence network to speak of, leaving her to do all the legwork herself. She has been trying to rectify this.
** However, this is offset by the fact that the SI is specialized in long-range intelligence gathering and mind reading, making sure that she never even comes near her targets or playing for time when combat is inevitable. She also prefers [[JackOfAllTrades flexibility]] and utility when it comes to using her powers.

* RoaringRampageOfRescue: [[spoiler: Hokaze rescuing a brainwashed Misaki and an Ayu who has been driven insane.]] She takes on a [[spoiler: Mental Out]] who is quickly reaching Level 6, as well as fighting [[spoiler: Gunha, Accelerator, Meltdowner, and Maidono]] at the same time by herself... and wins.

* OhCrap: [[spoiler: A brainwashed Misaki]] fires her cloud laser/pressure-cutter at the invincible Windowless Building... and the walls at the base ''break''.

** [[spoiler: During the fight against the Taowu, Misaki disables the entity by directly manipulating the magic of its talisman, armed with Esther Rosenthal's knowledge and using Accelerator's borrowed power to mitigate the backlash. In the process, she briefly manifests energy wings; this is implied to happen again later, when she destroys an offensive magical spell to save Misaka.

* SanitySlippage: Played with. In the climax of the second arc Misaki is forced to read [[spoiler:Esther Rosenthal's mind]] in order to recover countermeasures against [[spoiler: the Taowu]]. Skimming through a corruptive magical text has given her minor brain damage, which manifests in reduced impulse control. As such, she has become somewhat easier to provoke, more liable to divulge sensitive information and worse at hiding her sadistic tendencies. Her schoolmates and friends [[OOCIsSeriousBusiness are understandably concerned]] by this.
** Ayu was hit even worse than Misaki with this. Without the support of her friends from Ideal (though she was responsible for driving Hokaze away after the latter pledged to support Misaki through her pain regardless of Ayu's worries), her trauma over the horrors of Ideal continued to fester, leading her to mentally deteriorate until she goes insane enough to agree to a plan with Kihara Gensei, and starts raving about imaginary evils Misaki is responsible for to Junko in a call.

* {{Nerf}}:
** Unlike her canon counterpart, Misaki eschews physical mnemonic devices. Instead, she uses entirely mental mnemonics akin to a command line interface. While less dependent on external devices and more flexible, this makes her noticeably slower on the draw than her fellow Level 5 espers (or canon Misaki), taking multiple seconds to set up and execute an attack or command.
** Misaki's psychometry and mind control skills have been somewhat neglected; as such, she is less powerful in these fields than her canon counterpart. For example, when it comes to full mind control, she can control only up to five people at a time.

* NextTierPowerUp: What Mental Upper is for Misaki. When active, it allows her to use the abilities of everyone in the network, while sharing processing power and boosting their powers. This allows her to contribute in a much more direct manner in the field.

* PowerGivesYouWings: [[spoiler: During the fight against the Taowu, Misaki disables the entity by directly manipulating the magic of its talisman, armed with Esther Rosenthal's knowledge and using Accelerator's borrowed power to mitigate the backlash. In the process, she briefly manifests energy wings; this is implied to happen again later, when she destroys an offensive magical spell to save Misaka.]]

* RoaringRampageOfRescue: [[spoiler: Hokaze rescuing a brainwashed Misaki and an Ayu who has been driven insane.]] She takes on a [[spoiler: Mental Out]] who is quickly reaching Level 6, as well as fighting Gunha, Accelerator, Meltdowner, and Maidono at the same time by herself... and WINS.

* ThePowerOfHate: [[spoiler: Ayu]] calls her hatred the power that will let her prove she's worth something.