Fudou, Jun

不動ジュン

At the start of the story, Jun is a successful supermodel in Tokyo. A woman named Lan Asuka finds her and forces her to face a werewolf-like monster known as a Devil-beast. As the creature tears into Jun, her own powers awaken, and she transforms into a Devil-beast herself. She defeats the beast using her new abilities and reverts to her human form. Asuka then informs Jun that she belongs to a military unit called the Human Alliance, which aims to hunt down and kill everyone affected by Devil Beast Syndrome. Asuka presents Jun with an ultimatum: if Jun does not hunt for them, she will be hunted by them. From that point on, Jun has no choice but to obey Asuka.
Jun is a very quiet and timid person who appears to avoid most social interactions, with two exceptions. She is generally open with her manager and outright friendly with an aspiring teen model named Kazumi. As the series progresses, she becomes much more independent. She is the second human with Devil Beast Syndrome capable of retaining her ability to reason.
In the manga, Jun is very different; she is strong and outgoing from the start. She is also a gym teacher rather than a model in the manga.