Toaru Kagaku no Railgun Episode 13

"A Bikini Divides the Eyeline Between Top and Bottom, but a One-Piece Shows Off the Figure so They Only Flatter the Slender" (ビキニは目線が上下に分かれますけどワンピースは身体のラインが出ますから細い方しか似合わないんですよ) is the thirteenth episode of the Toaru Kagaku no Railgun anime series. It was first broadcast on December 26, 2009.

Synopsis
It is somewhere in the middle of summer in Tokiwadai Middle School, and both Misaka Mikoto and Shirai Kuroko feel the heat on their skin as they have their snacks outside. Kuroko takes this opportunity to get intimate with Mikoto by trying to get her to apply some sunscreen.

Unfortunately for Kuroko, schoolmates Awatsuki Maaya and Wannai Kinuho arrive to ask them a favor.

Maaya and Kinuho soon explain that they are in need of swimsuit models after the company that is sponsoring the Tokiwadai Swimming Team requested models for their products, and the swimming team simply has too few available people except for the juniors. Kuroko shows her enthusiasm over "helping" out, but Mikoto is still having second thoughts about becoming models for a day. However, due to some cunning acting by Kuroko, Mikoto ends up accepting Maaya and Kinuho's request, but not until she punishes Kuroko for having lecherous thoughts about her in a swimsuit.

Adapted From
This episode contains an anime-original story and thus, is not adapted from any source.

Adapted To

 * Game: Toaru Majutsu no Index: Imaginary Fest Main Story

Major Events

 * Kongou Mitsuko forms friends with Wannai Kinuho, Awatsuki Maaya, and becomes acquainted with Misaka Mikoto.

Characters
By order of appearance:
 * Misaka Mikoto
 * Shirai Kuroko
 * Wannai Kinuho
 * Awatsuki Maaya
 * Saten Ruiko
 * Uiharu Kazari
 * Kongou Mitsuko
 * Konori Mii
 * Kamijou Touma

New Characters

 * Nakamura
 * Ekaterina

Abilities

 * Electromaster (Railgun-variant) - Misaka Mikoto, Level 5

Locations

 * Academy City
 * School District 7
 * Tokiwadai Middle School

Trivia

 * A short OAD was later released along with the official visual book of the anime, featuring a story that is supposed to happen during the episode.
 * Wannai Kinuho drops the title of this episode while commenting on Uiharu's bikini during the first half.
 * Apart from Saten with her sarong, the swimsuits of Mikoto, Kuroko, and Uiharu, are fundamentally similar to the ones they were in Toaru Kagaku no Railgun SS: Liberal Arts City.
 * Mikoto hums the opening theme only my railgun at the end of the episode when she goes on the virtual beach alone wearing her childish two-piece

Cultural References

 * The way virtual studio functions is identical to holodeck from Star Trek franchise. That includes even edible food.
 * The scene where the girls find themselves on the moon is a tribute to the 1968 film ', featuring the iconic black monolith, ' ', and Kuroko briefly wielding a femur as the ape did in the opening of the film.
 * Kongou's red swimsuit-Ekaterina combination can be seen as a reference to Boa Hancock of One Piece fame.

Animation Trivia

 * The scene before the eyecatch of the episode, where all the girls are lined up together shows the extent on how the girls' heights, and most notably, their bust sizes differ drastically from previous episodes. Here, Saten is as tall as Mikoto despite being as tall as Kuroko in the ending sequence. Her bust size is as large as Mii despite being depicted as flat in both manga and novels, and even several times in past episodes. Even in this episode before donning the swimsuit, she appears flat. Mikoto also gains a considerable bust size despite her complaints regarding it as well. Only Kongou and Mii seem to be depicted being in front of the group but it does not explain her being taller than Mii, as the former was shown at least to be only slightly taller than Kuroko. The height difference can be handwaved due to the "sand" that have been put there, but there is no indication that it wasn't a flat surface in the first place.

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zh:动画:科学超电磁炮1-13