Quick answer — Sword Art Online: Alicization - War of Underworld: the opening theme is "Resolution" and the ending theme is "unlasting".
Kirito, Eugeo, and Alice. Six months have passed since the two disciples and an Integrity Knight brought down the pontifex, Administrator. With the fighting over, Alice has been living in her hometown of Rulid Village. Beside her is Kirito, who has not only lost his arm and soul, but also his dear friend. As Alice… Produced by A-1 Pictures, this action, adventure, and fantasy series premiered in Fall 2019. The series spans 12 episodes and is currently finished.
Also known as: SAOIV · SAO4
Sword Art Online: Alicization - War of Underworld has 12 episodes and is finished.
Sword Art Online: Alicization - War of Underworld was produced by A-1 Pictures and released in 2019.
Sword Art Online: Alicization - War of Underworld is classified under Action, Adventure, Fantasy.
Sword Art Online: Alicization - War of Underworld premiered in Fall 2019.
The opening theme of Sword Art Online: Alicization - War of Underworld is "Resolution".
The ending theme of Sword Art Online: Alicization - War of Underworld is "unlasting".
Sword Art Online: Alicization - War of Underworld is based on a light novel.
Sword Art Online: Alicization - War of Underworld is listed on Crunchyroll, Hulu, Adult Swim, iQ, Netflix. Availability varies by region.
Character data from AniList.
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