A Certain Scientific Railgun S

Mikoto Misaka and her friends are back, investigating rumors across Academy City. Soon, Mikoto discovers something terrifying: horrific experiments are taking place throughout the city, involving the murder of thousands of espers. Moreover, these espers are far from just ordinary people: they are…

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Episodes

Railgun#1RailgunRuiko is chased by some thugs in an alleyway until she is rescued by Mikoto who deals with them. The next day, as she waits for her friends to arrive at Tokiwadai, Mikoto has an uncomfortable run in with Tokiwadai's…2013-04-12 · 24m
Critical#2CriticalMikoto recalls in a dream of how, when she was younger, she was approached by scientists wanting to use her DNA map to help cure Duchenne muscular dystrophy. The next day, Kuroko tries to take Mikoto through an alleyway…2013-04-19 · 24m
Project Radio Noise#3Project Radio NoiseMikoto is reminded of rumors about there being a clone of her and attempts to question the girl, who was distributing the envelopes in order to fill the alleyways that security cameras can't reach with human eyes, but…2013-04-26 · 24m
Sisters#4SistersThree months earlier, in an unknown facility, a pair of scientists mentor the birth of a clone of Mikoto, labelled Misaka 9982, installing memory functions via Testament. Back in the present, Mikoto, who is feeling…2013-05-03 · 24m
Project Level 6 Shift#5Project Level 6 ShiftAfter unwillingingly helping her rescue a kitten from a tree, Mikoto tries to question Misaka 9982, but is unable to learn much due to being unable to decipher a codeword. She instead decides to follow her around in case…2013-05-10 · 24m
I... Can See All Of You#6I... Can See All Of YouMikoto unleashes her anger at Accelerator, who quickly deduces she is the original, becoming further enraged upon seeing Misaka 9982's torn leg and hearing Accelerator's selfish reasons for participating in the…2013-05-17 · 24m
I... I Want To Be Of Help To You, Sissy#7I... I Want To Be Of Help To You, SissyAs Mikoto secretly lays waste to each of the labs involved in the Level 6 Shift project, Kuroko continues to cover for her disappearances, but she grows increasingly concerned and starts to miss her friend. While on…2013-05-24 · 24m
Item#8ItemWith only two facilities remaining, the higher ups behind the Level 6 Shift project call upon the services of the underground group, ITEM. As Mikoto infiltrates one of these facilities, she finds herself against one of…2013-05-31 · 24m
AIM Stalker#9AIM StalkerMikoto attempts to escape from Shizuri's attacks, which proves difficult due to ITEM's third member, Rikō Takitsubo, using her AIM Stalker ability to help Shizuri and Frenda home their attacks on her position. Meanwhile…2013-06-07 · 24m
Meltdowner#10MeltdownerAs Mikoto eventually comes face to face with Shizuri, she manages to use some of Frenda's leftover doll bombs to compensate for her weakened powers. Shizuri fights off these dolls by using shards of prism glass to divide…2013-06-14 · 24m
The Vending Machine#11The Vending MachineMikoto runs into Touma, who, unbeknownst to her, has lost his memories of her, and ends up vandalising a vending machine to spit out drinks to compensate for some money it stole from Touma. Kuroko arrives on the scene…2013-06-21 · 24m
Tree Diagram#12Tree DiagramMikoto resolves to destroy the Tree Diagram, the supercomputer responsible for the experiment's calculations, in the hope she may be able to stop them. Meanwhile, Touma encounters Misaka 10032, who coerces him into…2013-06-28 · 24m
Accelerator#13AcceleratorMikoto falls in despair, realising that with the Tree Diagram destroyed, she has no way of stopping the experiments. She tries to cling onto her cause by mercilessly destroying another facility, but loses all hope when…2013-07-05 · 24m
The Promise#14The PromiseTōma arrives at the Tokiwadai dorms, where he is reluctantly greeted by Kuroko, who decides to let him wait for Mikoto return. When the Dorm Supervisor comes by for an inspection, Kuroko is forced to hide Tōma under…2013-07-12 · 24m
Kamijou Touma#15Kamijou ToumaDespite the injuries he received from Mikoto, Tōma goes off at full speed and arrives at the site where Accelerator and Misaka 10032 are fighting. Tōma states his firm desire to rescue Misaka 10032, saying that even if…2013-07-19 · 24m
Sisterhood#16SisterhoodAccelerator demands to know why Mikoto is protecting Misaka 10032 and is surprised to hear her answer that she is her sister. Before Accelerator tries to kill them, Tōma manages to regain his footing and uses the…2013-07-26 · 24m
Study Group#17Study GroupWhen asked by the Dorm Supervisor to explain her absences, Mikoto bluffs that she was having study sessions with her friends. As Ruiko arranges a get together so she can hear who Mikoto was making cookies for the other…2013-08-02 · 24m
Moving#18MovingA curious organisation oversees ITEM as they fight against a group of mechs. The next day, Mikoto and the gang visit Banri, who is due to be discharged from hospital soon and will be moving into an apartment with Erii…2013-08-16 · 24m
Academic Reach Assembly#19Academic Reach AssemblyThe girls are unable to find out any more information from Febri, as she appears to be a bit cautious around Mikoto and takes a liking with Ruiko. Kazari invites Ruiko and Febri to her apartment to spend the night. The…2013-08-23 · 24m
Febri#20FebriAs AntiSkill become curious over how the security bots functioned without any batteries, Mii treats the others by taking them to the public baths, where Mikoto starts to see Febri as something of a little sister, letting…2013-08-30 · 24m
Darkness#21DarknessHeaven Canceler goes on to explain to Mikoto that Febri's body is poisoned, requiring her to suck special lollipops to keep herself alive, leaving her angry that another dark organization is performing twisted…2013-09-06 · 24m
Study#22StudyWith Mikoto refusing to leave until she gets information about Febri, Therestina points her towards an organisation called Chemicaloid, hinting that they are planning something for the Academic Assembly. As Mikoto relays…2013-09-13 · 24m
Silent Party#23Silent PartyAritomi explains how he started the Chemicaloid Project out of jealousy towards espers, hoping to bring forth a revolution. Forced to recuperate elsewhere, Shinobu reveals to Mikoto how she was roped into STUDY following…2013-09-20 · 24m
Eternal Party#24Eternal PartyThe entirety of Judgment joins Kuroko and the others in fighting off against STUDY's mechs. Meanwhile, Mikoto and Febri arrive at STUDY's hidden base at a stadium, fighting off against the mechs Aritomi sends against…2013-09-27 · 24m

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Quick facts

Episodes24
Seasons1
StatusFinished
Aired2013
  • Japanese title: とある科学の超電磁砲S
  • Also known as: Toaru Kagaku no Railgun S, Toaru Kagaku no Railgun 2nd Season, A Certain Scientific Railgun 2nd Season

Synopsis

Mikoto Misaka and her friends are back, investigating rumors across Academy City. Soon, Mikoto discovers something terrifying: horrific experiments are taking place throughout the city, involving the murder of thousands of espers. Moreover, these espers are far from just ordinary people: they are clones of Mikoto herself. Feeling responsible for their treatment, she sets off to put an end to the experiments; however, the forces opposing her are much more dangerous than she anticipated, and Mikoto finds herself up against some of the most powerful espers imaginable.Toaru Kagaku no Railgun S continues the story of the Railgun as she desperately fights to put an end to the inhuman experiments that she believes she helped cause, her life dragged deep into despair in the process. There's never a dull moment in Academy City, but no one ever said all of them would be pleasant. \[Written by MAL Rewrite\]

Characters

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Frequently asked questions

How many episodes does A Certain Scientific Railgun S have?

A Certain Scientific Railgun S has 24 episodes, and its status is finished.

Where can I watch A Certain Scientific Railgun S?

You can stream A Certain Scientific Railgun S on Tubi, Crunchyroll. Availability depends on your region.

What order should I watch A Certain Scientific Railgun S in?

See the A Certain Magical Index watch order for every series and film in release order.

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