Night-time Academy City is shook by another tremor.
Kongou Mitsuko, who was busy studying, felt the quake from her dormitory room. She shrugged it off as another quake among those happening in the city for a few days that time, but as she reached to pick up her cup of tea, it moved by itself and broke after falling from the desk. It was followed by her entire doll collection floating as if picked up by a ghost.
The next day, at Sakugawa Middle School, Uiharu is called by her homeroom teacher and told her that a newly-transferred student will be her roommate: Haruue Erii.
Later on, Mikoto, Kuroko and Saten discuss on the newest transfer student from the 19th District as they went to Uiharu's place, where she and Erii prepare to move the latter's things in the former's room. With Kuroko's help, they moved in the boxes of Erri's belongings in, leaving the Teleporter and the others to organize them inside.
With the work done and with Kuroko and Uiharu needed for a joint meeting between Judgment and Anti-Skill regarding the recent earthquakes, Mikoto and Saten decide to tour their new friend around her new home and treated her some crepes. As they ate on the same bench where Saten and Uiharu became friends with Kuroko and Mikoto (in Episode 01), Mikoto expresses her disappointment that they were not complete due to the joint meeting the two Judgment members are required to attend. Saten then insists that the earthquakes, according to a rumor, is instead a poltergeist (a supernatural phenomenon).
This is debunked by Yomikawa Aiho, who is one of the speakers for the joint meeting held at the Anti-Skill 7th District Headquarters. According to her, it is a 'simultaneous outbreak of RSPK Syndrome'. (RSPK stands for recurrent spontaneous psychokinesis.) Then, a woman named Therestina from the Multi-Active Rescue Squad (MAR) explains that RSPK occurs when espers lose control over themselves, releasing an immense amount of power. She also adds that RSPK happens in the individual level, and earthquakes like the one happening recently can only happen through a simultaneous manifestation of RSPK.
After the joint meeting, Kuroko and Uiharu meet up with Saten, Mikoto and Erii at Playland GAU to play some games (and to persuade Erii to play some as well). They also took a picture of themselves in a photo booth and while resting, Saten remarks that Erii was like Uiharu in the past.
The topic soon shifts to the upcoming Academy City Fireworks Display, where everyone decides to participate in.
In Uiharu's place, she and Erii prepare themselves for the Fireworks Display; unfortunately, Uiharu doesn't know how to properly wear a yukata, and ends up calling Saten to assist. Saten manages to help out and soon, remarks on how mature Uiharu has been after being a little sister to Saten.
A few minutes after sunset, the four girls and Haru'ue meet up by the riverside wearing their yukata (Mikoto and Kuroko just escaped due to the strict curfew inside Tokiwadai Middle School's dormitory). There, they went to the night fair where they participated in the different booths inside.
After a quick rest, they moved out to higher ground, a place overlooking the city, and watched as the fireworks display started. At first, Erii was still happy at seeing the fireworks go one by one, but seeing Uiharu and Saten saying "Tamaya!" in unison made her remember something and left abruptly. As Uiharu and Saten chase Erii, Kuroko takes the chance to be 'intimate' with Mikoto, only to be interrupted by a call from Konori.
Konori frantically talked to Kuroko, finally finding out important information regarding the Poltergeist phenomenon after hours of research. She told her that the phenomenon has a chance of being created by deliberate interference to espers' AIM diffusion fields.
All of a sudden, the platform where the girls are at began to shake and lose integrity. Another earthquake is taking place. Part of the platform gives in to the quake's force, but Kuroko manages to teleport herself and Mikoto to safety. Meanwhile, Saten can barely move due to the earthquake and Uiharu was covering Erii when a light post came crashing down on her. Out of nowhere, a robot-looking machine with dark red and pink markings on it lifted the light post and averted the disaster from happening. Soon, the voice of Therestina emerged from the machine.
With the earthquake subsided, Erii mutters "Where are you?" while clutching her locket.
From a distance, a familiar figure prepares to take off her clothing.
Therestina shows a wide grin.
All of these happening under what seemed like the happiest moment of the summer vacation.
- Apart from adapting a montage from the chapter cover of the 2nd part of the special 17th Railgun manga chapter, the rest of the episode is anime-original, and as such it is not adapted on any pre-existing material.
- Kongou Mitsuko
- Uiharu Kazari
- Haruue Erii
- Misaka Mikoto
- Shirai Kuroko
- Saten Ruiko
- Yomikawa Aiho
- Konori Mii
- Therestina Kihara Lifeline
- Akemi (flashback)
- Muu (flashback)
- Mako (flashback)
- Tokiwadai Dorm Supervisor
- Teleport - Shirai Kuroko, Level 4
- Academy City
- "RSPK Syndrome" and "Poltergeist" are introduced into Toaru Kagaku no Railgun storyline in this episode. Before this, these two terms have been briefly mentioned in the 3rd light novel volume's 2nd chapter during Tsukuyomi Komoe's talk about espers with Index and Himegami Aisa in the bathhouse.
- This episode marks the first time a winter uniform is seen in the whole Toaru anime adaptation, in this case, the Sakugawa Middle School winter uniform (also its debut), albeit in a flashback occurred probably before summer in the current timeline.
- Daigo has a ring because he proposed to the principal of Asunaro Park Orphanage.
- Other than Erii, the poses that the girls make in the photobooth is a reference to the Ginyu Force of Dragon Ball fame.
Differences in Adaptation
- The flashback scene with Saten, Uiharu, Akemi, Muu and Mako is based on one of the pictures seen in the cover of the second part of the special 17th chapter of Railgun manga. The difference is that the flashback itself is slightly extended and Saten in the montage is replaced by Mako, making Saten in the one who take a picture to Uiharu.
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