Toaru Kagaku no Railgun Manga Chapter 042

Characters
In order of appearance:
 * Mako
 * Muu
 * Akemi
 * Saten Ruiko
 * Uiharu Kazari

New characters

 * Fukiyose Seiri
 * Himegami Aisa

Trivia

 * Continuing with the running joke surrounding her as a character that doesn't stand out or irrelevant, Aisa's entire is conveniently covered throughout her entire appeerance in this chapter.