Alice Zuberg

Alice Schuberg (アリス・ツーベルク) is one of the heroines in the Alicization Arc and the childhood friend of Eugeo and Kirito (during his first dive into Underworld).

Alicization Beginning
In the beginning, Alice was a Sacred Arts apprentice under Sister Azariya, and she would bring lunch to Eugeo and Kirito at the Gigas Cedar every day. On a quest to find ice at the «Mountain Range at the Edge» to make their lunches last longer, they take a wrong turn in the cave and turn up into the edge between the Human World and the Dark Territory. Looking up, they see an intense battle between a Dark Knight and an Integrity Knight. Seeing the Dark Knight dying after he crashed into the ground near the children, Alice trips over herself while trying to reach the dying Knight to help him, and as she falls, her hands brush the soil of the Dark Territory before Kirito and Eugeo manage to pull her back onto the neutral land. Sacred Arts confirmed that she broke one of the laws in the Taboo Index, and the window disappears before the trio made sense of it.

Scared, Eugeo and Kirito run home, carrying Alice. They sigh in relief when nothing turns up that night. However, at lunch the next day, an Integrity Knight, called Deusolbert Synthesis Seven, arrives, announcing that Alice has broken one of the Taboo Index laws and that he is going to take her to the Central Cathedral to interrogate and execute her. Kirito attempts to rescue her but is stopped by the town people while Eugeo is frozen due to his inability to go against the law, so neither of the boys manage to save her before she is taken away by the Integrity Knight. In the period of two UW days, Alice arrives at the Central Cathedral, where Quinella conducts a «Synthesis Ritual» on her, suppressing the girl's memory and turning her into an absolutely loyal Integrity Knight.

Six UW years later, Eugeo and Kirito save Selka from the goblins, but Eugeo is greatly injured in the process. While Selka transfers Kirito's life into Eugeo's dying body to save him from dying, Alice appears to Kirito and tells him that she is waiting for him at the top of Central Cathedral. Her spirit then runs through Kirito and gives him enough «Life» to save both of the boys from death.

Alicization Turning
Alice arrives at the Sword Mastery Academy as an Integrity Knight, referring to herself as «Alice Synthesis Thirty», after Kirito and Eugeo break the Taboo Index by harming Humbert Zizek and leading Raios Antinous to his death. Due to the Synthesis Ritual, she does not recognize the two youngsters as her childhood friends and also threatens them by saying that she had permission to decrease their Life by 70% when Eugeo tries to touch her. Alice arrests Eugeo and Kirito for breaking the Taboo Index and takes them to the Central Cathedral prison. She also orders one of the knights, Eldrie Synthesis Thirty-one, to stand guard in the Cathedral's garden in the unlikely case that the two prisoners escape.

Alicization Rising
After Kirito and Eugeo reached the Cloudtop Garden on the 80th floor of the Central Cathedral, they found Alice sitting silently atop a hill next to an olive tree. At the moment Eugeo began to think that Alice was asleep, she spoke to the two intruders, asking them to wait a little longer while the olive tree basked in sunlight, as it had been long since they had such good weather. When the two swordsmen started climbing the hill, Alice stood up and remarked that she was surprised that the two managed to defeat Eldrie, Deusolbert and Fanatio, even though she assumed that just Eldrie standing guard would be sufficient in the off chance that they escaped from the Cathedral's jail. After asking what was their motive in challenging the Integrity Knights and not receiving an answer, she decided to use her sword to get the answer and turned the tree growing atop the hill into her Fragrant Olive Sword.

As Kirito and Eugeo charged at Alice, Kirito planning to take Alice's first blow to give Eugeo enough time to stab her with Cardinal's dagger, she brandished her sword and, the next moment, it disassembled into thousands of flower petals which then fiercely assaulted and blew away the two attackers. She then ridiculed them for mocking her by attacking her without even drawing their swords and remarked that she would not go easy on them the second time.

After Kirito silently told Eugeo to get started on his chant, he asked for a fair duel with Alice in an exaggerated motion. Alice, agreeing to have a fair duel, reassembled her sword out of the flower petals. After Alice explained the nature of her sword, Kirito immediately charged at Alice, hoping to get the upper hand with consecutive hit skills, however, Alice easily deflected him on his first hit. Afterwards, it was Alice turn to go on the offensive and she delivered slash after slash at the retreating Kirito. After merely 5 exchanges of offense and defense, Kirito was driven to the western wall of the floor. As Kirito averted another swing from Alice, he suddenly jumped at her, restricting her arms, and then immediately telling Eugeo to activate his sword's special ability.

After both Alice and Kirito were frozen by the Blue Rose Sword, Eugeo let go of the sword to stab Alice with his dagger. However, after Eugeo had only taken three steps, Alice's sword turned into petals which quickly shaved off the ice. After Alice remarked that mere ice did not even have a chance of restricting her flowers and turned her flowers back into her sword, Kirito immediately finished the chant for his sword and attacked Alice's sword with a torrent of darkness. While Kirito had Alice occupied, Eugeo again attempted to come close to her to stab her with his dagger, however, as he was getting closer, the torrent of both Divine Instruments hit the walls of the floor and broke them. At that moment, the air within the room began flowing out of the room, dragging both Kirito and Alice out through the hole while the wall resealed itself behind them.

Trivia

 * In the original web novel, Alice's name after becoming an Integrity Knight was Alice Synthesis Fifty, which designated her as the 50th member to join the Integrity Knights. In the light novel, her name was changed to Alice Synthesis Thirty, thus making her the 30th member to join.
 * Coincidentally, her name is the same as the acronym of the concept of Rath's plan, Artificial Labile Intelligence Cybernated Existence (A.L.I.C.E).