Fixed Temperature (恒溫 Kōon?) is the 117th chapter of the Toaru Kagaku no Railgun manga series, released on August 27th 2019 in Monthly Comic Dengeki Daioh.


Major EventsEdit


By order of appearance:




  • This marks the first time that Uiharu has used her power in the manga.
  • Uiharu's flower had withered due to heat in the room, but it went back to normal after drinking water.


  • Uiharu recalls memories of her promise with Saten that she would not disappear suddenly like Saten's friend.[1]
  • Tsurigane is still considering her duty for Oumi Shuri, despite betraying her.[2][3] Also, Tsurigane did not know that she had been expelled from the Kouga by Oumi Shuri due to being unconscious at the time.[4]
  • Saten uses the alias "Saten Akemi" as she disguised herself. This is a reference to her friend, Akemi. whose last appearance was in chapter 80.[5]

Cultural ReferencesEdit

Unanswered QuestionsEdit

  • What is happening to Kimi's arm?


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