# Where to Watch Sword Art Online: Alicization - War of Underworld

**Alicization reaches open warfare here, so this is a continuation rather than a friendly entry point for newcomers. Crunchyroll, Hulu, and Netflix are the legal streaming choices, and each offers both subtitled and dubbed viewing. This 2019 TV installment runs for 12 episodes at 24 minutes apiece. Its focus shifts toward a large battle inside the Underworld, with Kirito unable to lead the response and Alice facing an invasion alongside the human forces. Expect sustained fantasy combat and a more serious mood than the franchise's lighter stretches. It is best suited to viewers already invested in Alicization, especially those who want its setup to pay off through direct confrontation rather than another round of explanation.**

## Where to Watch

- [Crunchyroll](https://www.crunchyroll.com/sword-art-online)
- [Hulu](https://www.hulu.com/sword-art-online-alicization)
- [Netflix](https://www.netflix.com/title/70302573)

Choose Crunchyroll, Hulu, or Netflix for this arc. All three services provide the original subtitled presentation as well as an English dub.

## Synopsis

The human side of the Underworld prepares for an assault from the Dark Territory while Kirito remains broken and unable to take his usual place in the fight. Alice becomes central to the defense as familiar allies try to hold together what is left and stop the approaching army. The story follows the opening phase of that conflict without resetting the larger Alicization plot, turning earlier tensions into a broad fantasy war. New viewers would miss much of the emotional context, but returning fans get an immediate continuation built around pressure, divided forces, and the cost of protecting this artificial world.

## Fast Facts

- **Format:** TV
- **Episodes:** 12
- **Premiered:** 2019
- **Studio:** A-1 Pictures
- **Score:** 7.5

## Watch Order

Begin with the earlier Sword Art Online seasons, then watch the first half of Alicization before starting War of Underworld. Its opening assumes you already understand the Underworld, Alice, Kirito's condition, and the conflict now moving into battle.

- [Sword Art Online: Alicization](https://hozuna.com/anime/sword-art-online-alicization) (prequel)
- [Sword Art Online: Alicization - War of Underworld 2nd Season](https://hozuna.com/anime/sword-art-online-alicization-war-of-underworld-season-2) (sequel)

## If You Liked This

- **[Log Horizon](https://hozuna.com/anime/log-horizon)**: Log Horizon is a good follow-up for viewers who enjoy virtual worlds treated as functioning societies, with rules and group strategy shaping each conflict.
- **[No Game No Life](https://hozuna.com/anime/no-game-no-life)**: No Game No Life suits fans drawn to vivid game-world fantasy, though it trades battlefield warfare for contests decided through elaborate games.
- **[The Rising of the Shield Hero](https://hozuna.com/anime/the-rising-of-the-shield-hero)**: The Rising of the Shield Hero offers another action-focused fantasy journey for viewers who want an ongoing struggle inside an unfamiliar world.
- **[Made in Abyss: Dawn of the Deep Soul](https://hozuna.com/anime/made-in-abyss-dawn-of-the-deep-soul)**: 
- **[Nausicaa of the Valley of the Wind](https://hozuna.com/anime/nausicaa-of-the-valley-of-the-wind)**: 
- **[Digimon Adventure](https://hozuna.com/anime/digimon-adventure)**: 
- **[Wolf's Rain](https://hozuna.com/anime/wolf-s-rain)**: 
- **[Fullmetal Alchemist: Brotherhood](https://hozuna.com/anime/fullmetal-alchemist-brotherhood)**: 

## FAQ

### Where can I watch Alicization - War of Underworld?

The legal streaming options are Crunchyroll, Hulu, and Netflix. Subtitled and dubbed versions are offered on each service.

### How many episodes does War of Underworld have?

This installment contains 12 episodes, each with a 24-minute runtime. It is a compact section of the continuing Alicization story rather than a standalone adventure.

### Where does War of Underworld fit in the series?

It picks up directly after the first half of Alicization. Watch the earlier Sword Art Online seasons and Alicization beforehand so the setting, relationships, and opening crisis have their intended context.

### Is Sword Art Online: Alicization - War of Underworld finished?

Yes, this 2019 TV installment has finished airing. Its 12 episodes lead into the second cour of War of Underworld.

### Does War of Underworld have a dub?

Yes, a dubbed version is available alongside subtitles. Crunchyroll, Hulu, and Netflix all list both viewing options for this arc.