Although Fairy Tail has been disbanded and its members are now spread far across Fiore, Natsu Dragneel hasn't given up on reuniting the guild he and others once called home. Along with his companions Happy and Lucy Heartfilia, he will stop at nothing to keep Fairy Tail and its fiery spirit alive even as they face their most difficult trial yet—the invasion of Fiore by the Alvarez Empire's immense army and their all-too-familiar ruler.
(Source: MAL Rewrite)
In a world where women now dominate the government, the creation and use of weapons is strictly forbidden. However, by no means has conflict been brought to an end; instead of weapons, war is waged through words. With the power of the "Hypnosis Mic," lyrics can affect one's opponent in various ways and cause real damage. Those in the divisions outside the women-only Chuou Ward thus use it for fierce rap battles as their weapon in the constant clash for territory.
(Source: Tokyo Otaku Mode)
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 devotes herself to looking after Kirito, she too has lost the will to fight she once had as a knight.
Nevertheless, the time for the final stress test – one which will engulf the entire Underworld with tragedy – draws relentlessly closer.
Meanwhile, in the deepest areas of the Dark Territory, the Dark God Vecta has resurrected, as if to have waited for this very moment. Leading an army of dark forces, they begin their invasion into the human empire in hopes of attaining the Priestess of Light. The human empire force led by the Integrity Knight Bercouli prepares for a war of an unimaginable scale against the army of the Dark Territory. Even then, Alice is nowhere to be seen, nor the two heroes that saved the realm...
(Source: Official website)
Second part of Sword Art Online: Alicization - War of Underworld.