Tia

Tia, also known as the Other Goddess or other Premiere, is a game adaptation-original character in Sword Art Online: Hollow Realization. Like her sister Premiere, she is a Non-Player Character (NPC), born from the creation of Sword Art: Origin.

Appearance
Tia looks almost identical to Premiere, with blue eyes and short black hair. The only identifying difference between the twins is the absence of a small mole right under the corner of Tia's right eye, unlike Premiere.

Hollow Realization
The Other Goddess was first encountered by Kirito wandering the streets. Mistaking her for Premiere, he took her outside the Town of Beginnings, where they witnessed a player hallucinating under the effects of a digital drug. When the trance player was forcibly logged out by his Amusphere, the Other Goddess, who did not know what was occurring at the time, stated to Kirito she had no explanation for the phenomenon they had just seen.

Later, after the defeat of the boss of the Jeweled Peak Lakes, Tia was met with Genesis, who was furious at the developers for hiding the real boss behind a decoy and at Kirito's group for defeating it. Mistaking her for Premiere, he grew interested in why Kirito and his friends were spending a great deal of their time with an NPC like her, concluding they knew something about her he did not, much like with the boss.