Sayaka Koyanagi

Sayaka Koyanagi is a young girl who formed a group of Collectors to gather hundred coins. Sayaka was in love with a female teacher who had moral doubts about their relationship and Sayaka ended up sharing with a friend which led to the friend revealing it publicly and the teacher killing herself. After being betrayed Sayaka started to have trust issues. Because of that she had a very clear images on what she wanted and received her ability. Source: Gleipnir Wiki