Sachi

The only girl in the guild and a spear user. A timid girl who was constantly afraid of death. She died along with other guild members in the 27th floor labyrinth area. The death of the Black Cats, including Sachi, left a deep traumatic scar on Kirito's heart.

She herself had a premonition that she wouldn't survive long due to her lack of will to live, and left a will in a time-delayed recording item. Her words, played back six months after her death, expressed gratitude to Kirito and conveyed that even if she had died, it was not Kirito's fault, and she wished for Kirito to continue living. On June 22, 2025, about two years after her death, her lingering thoughts, attached to the old Aincrad data, encountered Asuna within ALO.