Toaru Kagaku no Railgun Manga Chapter 143

Clever (怜悧) is the 143rd chapter of the Toaru Kagaku no Railgun manga series, the first part of which was released on November 26th 2022 in Monthly Comic Dengeki Daioh. The second part was released on December 26th 2022 and the third part was released on January 27th 2023.

The chapter was released in 3 parts when serialized in Dengeki Daioh, but only the first and second parts combined together when compiled for the tankōbon version.

Part 1
While Montgolfier is attacked by the three Tokiwadai cliques, Hasekura Reiri goes off alone to follow the ultrasonic waves she detected from the company building, which leads her to the headquarters of Antikythera. Meanwhile, Mikagami Nagisa is surprised to see her clique members join the attack, defying her expectations she had when Hasekura laid out the Montgolfier plan to her and Sha Danshan.

Mibuki Kazan poses as Hasekura Reiri in the attack at the Montgolfier building. The real Hasekura makes her move at the control center of Antikythera, revealing that her liquid-based ability had caught the ultrasonic waves transmitted to the attackers during the last attack on her, the same waves she also detected during the attack on Montgolfier. Although outnumbered, Hasekura manages to fight back against Mitarai Ayane and many Attachment Dark Matter units, even outmatching the heavy versions of the suit by freezing them to below operational limits.

Hasekura is soon surprised by a report from one of the Attachment Dark Matter of a Tokiwadai student caught sneaking in the facility. This student is revealed to be none other than Misaka Mikoto.

Part 2
Due to Ruri's suggestion, Mikoto arrives at Antikythera to help Hasekura Reiri, only to find herself sitting idle as Hasekura was not in any struggle. After Mikoto deals with the Attachment Dark Matter units at her side, she notices that the boss has ran away, something that Hasekura leaves to Anti-Skill. Meanwhile, Asato Kisa reports the successful subduing of hostile forces at Montgolfier. As Hasekura and Mikagami meet with Lily (who represents Sha Danshan who is apparently resting at the infirmary), Hasekura voices her suspicions that their plan was resolved too smoothly with them managing to bait out the culprit and perform the attack without problems.

Meanwhile, the boss of Antikythera manages to travel to the company's second building to obtain the data from there. During this time, the boss is confused about his own actions, especially performing a direct attack on Tokiwadai, and soon realizes that the Attachment Dark Matter units know that they performed the first attack on Hasekura Reiri, not on Kazan'in Tsukasa. Sha Danshan then emerges, revealing that she had used one of Misaki's remotes along with her ability to use a weaker version of Mental Out on the boss of Antikythera. Then, she uses a fossil to create a prehistoric creature that will get rid of the Attachment Dark Matter units about to attack her.

Part 3
While leaving the boss of Antikythera and his security detail at the mercy of the reproduced creatures, Sha heads further into the facility to find and destroy the records of her deal with the company. Although unable to enter one of the rooms due to its security features, Sha decides to teleport a urethane sign of the company into the room, using a hair accessory she obtained from Shirai Kuroko earlier.

She then meets with Kessai Kiyoshi, who was assigned a communications role in the attack on the Montgolfier headquarters, and reveals the current progress of her plan. Despite a perfect scapegoat in Antikythera and the growth of the Hasekura Clique being stunted, Sha still believes that they need to wait until the next graduation, not only to free themselves of Hasekura Reiri but also to give herself the time to develop her powers. For the meantime, Sha allows the rumors of the destructive power of Tokiwadai Middle School to spread and considers plans to use the Level 5s, with the true intention of bringing down the school.

Major Events

 * Hasekura Reiri foils Antikythera's plan to retrieve data from Montgolfier.
 * The Montgolfier attack ends with the combined efforts of the Hasekura, Mikagami and Sha Cliques defeating the Attachment Dark Matter units deployed in the building.
 * Sha Danshan reveals that she had manipulated the boss of Antikythera into becoming more aggressive towards Tokiwadai.
 * After disposing of her scapegoats with reproduced prehistoric creatures and leaving the scene, Sha meets with Kessai Kiyoshi and discusses a change in their plans (including a wait until the third years graduate), revealed to ultimately be aimed at Tokiwadai's destruction.

Characters
By order of appearance:
 * Hasekura Reiri
 * Mitarai Ayane
 * W. G. Waitley (named)
 * Mikagami Nagisa
 * Sha Danshan
 * Enjou Kasumi
 * Kazan'in Tsukasa
 * Mibuki Kazan
 * Kessai Kiyoshi
 * Misaka Mikoto


 * Asato Kisa
 * Yasutoba Suika
 * Sukezawa Sena
 * Lily

Abilities

 * Electromaster - Misaka Mikoto, Level 5
 * - Hasekura Reiri, Level 4
 * - Mibuki Kazan
 * - Mitarai Ayane


 * - Sha Danshan
 * Mental Out - Shokuhou Misaki (reproduced)
 * Teleport - Shirai Kuroko (reproduced)

Locations

 * Academy City
 * Montgolfier HQ
 * Antikythera HQ

New Locations

 * Antikythera Building 2

Trivia

 * For Part 2 and 3, Chinese language supervision is credited to 糸糸(Dennis) and Puyocha (ぷよちゃ).
 * Railgun editor Ogino Kentarou had previously been looking for a Hong Kong Cantonese translator via Twitter on November 29th.
 * Puyocha is the artist in charge of drawing the manga adaptation of, which was serialized in ComicWalker, released under the Dengeki Comics NEXT imprint, and edited by Ogino Kentarou.
 * Although the Antikythera boss involved in the chapter's events was not fully identified in the chapter itself as the same W. G. Waitley mentioned in Hasekura's data, it was confirmed to be him by Ogino in a Q&A.

Referbacks

 * Hasekura is revealed to have detected Mitarai's ultrasonic vibrations during the previous attack.
 * Kazan'in Tsukasa and Enjou Kasumi, the ones involved in the first ever incident involving the two cliques, are seen interacting with each other. Tsukasa protected from an attack about to hit Kasumi, but the pride of both girls kept reconciliation from happening at the moment.
 * Sha had previously mentioned carrying fossils to manifest from, ostensibly for self-defense, and given the appearance of the manifestations, they are likely the same creatures she mentioned as examples then - Omegalodon and B-Rex.
 * Sha had taken off Kuroko's hair tie under the guise of doing her hair during their encounter, and is revealed to have stolen it for reproducing Kuroko's Teleport.


 * Kessai Kiyoshi refers to Sha Danshan as her big sister. She mentioned that she had an older sister during her first encounter with Misaka Mikoto.
 * The ending of the overall chapter, with Sha Danshan facing up some stairs and Kessai Kiyoshi away near the base, is reminiscent of a similar ending scene in Shokuhou Misaki's introductory chapter, with Shokuhou on the stairs and Misaka Mikoto on the ground floor.

Cultural References

 * The chapter title is a homophone and possible allusion to Hasekura Reiri's given name.
 * Femto is a denoting 10−15.
 * The (named after, the French physicist who discovered it in 1834) is a type of thermoelectric effect which occurs when an electric current passes through the circuit of a thermocouple, with heat being generated at one junction and absorbed at the other. The Peltier effect is the presence of heating or cooling at an electrified junction of two different conductors, and is utilized in thermoelectric heat pumps and thermoelectric cooling devices.
 * is a phenomenon based on the magnetocaloric effect. This uses a material to expose a substance that needs cooling to a changing magnetic field, lowering its temperature. This phenomenon is commonly used in refrigerators.
 * When Hasekura freezes the Attachment Dark Matters to finish the fight, her move is referred to as Freeze Checkmate -273. While is the winning move of, -273 degrees Celsius is close to.


 * The prehistoric creatures which Sha manifested from fossils to dispose of the Antikythera members are strongly similar to depictions of the and, and given her previous references to creatures which were likely puns on them, namely B-Rex and Omegalodon, these are likely those same creatures.
 * was a species of giant that lived approximately 23 to 3.6 million years ago, from the Early Miocene to the Pliocene.
 * , colloquially known as T-Rex, was a genus of large dinosaur which existed during the late Cretaceous, just before the.
 * The third part's opening text in the magazine version describes Cretaceous violence against the humans (with the presumed Omegalodon the first thing visible), but of the two real-life creatures and presumably their counterparts in the Toaru series, only the T-Rex (and presumably the B-Rex) are from the Cretaceous.
 * Antikythera's logo is the company's namesake, the, the Ancient Greek hand-powered orrery described as the oldest example of an analogue computer.