Fubuki

Shima Fubuki is the twin sister of the story's heroine, Aki, and a member of the 'Mirror Group,' an organization dedicated to researching mechanical arms. In stark contrast to her lively elder sister, Fubuki carries a quiet and enigmatic presence, operating alongside a tentacle-type mechanical arm known as 'Amaryllis.' Beneath her composed and unreadable exterior lies the weight of a family tragedy and a complicated attachment to her sister—making her a pivotal figure who bridges the bond between the two siblings and the shadowy conspiracies at the heart of the group.