Episode 21: “Darkness”
- 21 of 24
- September 6, 2013
- 24 min
- Aired
From Acino, the anime encyclopedia
| Series | A Certain Scientific Railgun S |
|---|---|
| Episode | 21 of 24 |
| Japanese | 闇 |
| Original air date | September 6, 2013 |
| Episode length | 24 min |
| Studio | J.C.Staff |
| Previous episode | Episode 20: “Febri” |
| Next episode | Episode 22: “Study” |
| Streaming | Crunchyroll, Netflix, Hulu, Tubi |
“Darkness” is episode 21 of the anime A Certain Scientific Railgun S. It first aired on September 6, 2013.
Summary
A summary of this episode has not been written yet.
Music in this episode
- OP 2“eternal reality” — fripSideAnimeThemes
- ED 3“Links” — Sachika MisawaAnimeThemes
Where to watch
Streaming services that list A Certain Scientific Railgun S. What you can watch depends on your country. Acino does not host any video; each link leads to the service's own page.
Episode guide
About the series
A Certain Scientific Railgun STV series · 2013 · 24 episodes · J.C.Staff · ★ 8.00
A Certain Scientific Railgun S is a 2013 Japanese anime television series based on the manga series by Kazuma Kamachi. It is animated by J.C.Staff. It aired from April 12, 2013 to September 27, 2013, with 24 episodes.
Read the article →References
- “A Certain Scientific Railgun S”. Kitsu. Retrieved October 22, 2026.
- “Toaru Kagaku no Railgun S”. MyAnimeList. Retrieved October 27, 2026.
- “A Certain Scientific Railgun S”. AnimeThemes. Retrieved October 23, 2026.
Episode titles and air dates come from Kitsu. The summary is written by Acino with AI assistance and checked so that it does not copy other sites.