Anne is one of Beruhren's many test subjects and was sent alongside Ende to lure out Tetsuro. She wishes to live a peaceful and happy life with Ende and will do anything to achieve it, even if it means hurting others.

Spoiler

Anne was killed when Ende lost control over herself after reaching her limit in her spider like extend body and blasted Anne, along with Tetsuro. Her final words were sorry for causing Ende to harm others.