A Certain Scientific Railgun S Episode 10: Meltdowner
Episode 10 of 24 of A Certain Scientific Railgun S, aired June 14, 2013, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Having realized who Misaka is, Mugino decides to give her a run for her third-place ranking. When Frenda mistakenly leaves her doll-bombs behind while heading to the other facility, Misaka collects them and uses them to supplement her diminished powers.