Koko SHIROZAKI
Koko SHIROZAKI is a young woman with black hair who lives in a small town. She is a kind and caring person, but she is also very shy. One day, Koko meets a mysterious man named Shin Yami no Koe: Kaidan. Shin is a powerful sorcerer, and he quickly becomes infatuated with Koko. He offers to teach her magic, and Koko agrees.
As Koko learns more about magic, she begins to change. She becomes more confident and assertive, and she starts to develop a dark side. She also starts to fall in love with Shin, but she knows that their relationship is forbidden.
One day, Shin asks Koko to marry him. Koko is overjoyed, but she knows that she cannot accept his proposal. She tells Shin that she must leave him, and she runs away from home.
Koko travels to a faraway land, where she meets a group of people who are also trying to escape from Shin. They help Koko to learn more about her powers, and they teach her how to use them to fight against Shin.
Koko eventually returns to her hometown, where she faces Shin in a final battle. She defeats him, and she uses her magic to destroy his dark powers. Koko is finally free