Clair Aoki

Clair Aoki (青木紅愛, Aoki Kurea) is a young girl who is looking for her sister, who became a monster. After meeting Shuichi Kagaya, who was also a monster, she teamed up with him in order to help her find her.

Appearance
Clair is a fair-skinned young girl with long light brown hair and brown eyes. She has freckles on her face and has quite a developed figure, more so than her older sister.

Personality
Clair is a conflicted person. Seeing her sister become a monster and murder her family while no one believed her, made her feel lost and in utter despair to the point she attempted suicide.

After being saved by Shuichi in his monster form, she realizes that monsters are indeed real and becomes decided to find her sister.

Initially viewing Shuichi with scorn, thinking of him purely as a monster she was verbally and physically abusive towards him, even blackmailing him and using him as her own tool. However, she soon learns that Shuichi is in fact terrified of the prospect of becoming a true monster and ever since develops a bond with him and vows to die if Shuichi does, so that he is not alone.

In the process of finding her sister, she is ready to do anything, even killing other people and is shown to be able to kill her emotions with frightening cold precision.

In a rather more light side of her personality she shown to be quite shameless and perverted, often undressing in front of Shuichi and even making lewd jokes.

Plot
Clair wanted to end her life and started an arson, but was saved by Shuichi Kagaya. While being saved, she woke up and saw him as a monster.

The next day, she found Shuichi in school, showing him his phone and telling him she saw him and that she is interested in monsters like him and wishes to talk. As they met on the roof and Shuichi told her he wasn't a monster, she pushed him off. While falling, he transformed and then jumped back on the roof. She then started questioning him; what was he, and threatening she will reveal his secret. But Shuichi had no idea, and told her, he just transformed one day. On the way to her home, she introduced herself and showed him a coin she found, but Shuichi didn't know anything about it. In her apartment, she explained she was looking for her sister, who was a monster like him.

Power & Abilities
Clair has very little in the ways of fighting ability by herself. To do battle she relies on using Shuichi's monster form by entering inside of him by opening the zipper in his back. While inside of him they "become one", able feel one other's feelings. She is able to take control of Shuichi's body as if it was her own and has overall more control over his body than he does while she is inside, although Shuichi can still wrestle for control to some extent.