Episode 1: “Underworld”
Sword Art Online: Alicization · アンダーワールド
- 1 of 24
- October 7, 2018
- 48 min
- Aired
From Acino, the anime encyclopedia
| Series | Sword Art Online: Alicization |
|---|---|
| Episode | 1 of 24 |
| Japanese | アンダーワールド |
| Original air date | October 7, 2018 |
| Episode length | 48 min |
| Studio | A-1 Pictures |
| Next episode | Episode 2: “The Demon Tree” |
| Streaming | Crunchyroll, Netflix, Hulu, HIDIVE |
“Underworld” is episode 1 of the anime Sword Art Online: Alicization. It first aired on October 7, 2018.
Summary
A summary of this episode has not been written yet.
Music in this episode
- OP 1“ADAMAS” — LiSAAnimeThemes
Where to watch
Streaming services that list Sword Art Online: Alicization. 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
Sword Art Online: AlicizationTV series · 2018 · 24 episodes · A-1 Pictures · ★ 7.58
Sword Art Online: Alicization is a 2018 Japanese anime television series based on the light novel series by Reki Kawahara. It is animated by A-1 Pictures. It aired from October 7, 2018 to March 31, 2019, with 24 episodes.
Read the article →References
- “Sword Art Online: Alicization”. Kitsu. Retrieved October 22, 2026.
- “Sword Art Online: Alicization”. MyAnimeList. Retrieved October 27, 2026.
- “Sword Art Online: Alicization”. 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.