At private Mihama Academy, five girls who seem normal attend the school due to "certain reasons." A sixth student "with reasons" named Yūji Kazami transfers in. Yūji has an ego with such darkness that he does not fade in comparison to the five girls, who are so different from the norm. As they each meet each other, they deepen their understanding of one another. Through the small bits of progress they make, each of their hearts will be affected. When Yūji arrives, a story of girls who are trapped by their pasts begins.
In 2018, humans and wizards live together in Tokyo. Police continue to protect order in society, but wizards are tried according to magical law, in special courts defended by wizard barristers. At age seventeen, Cecile has just become the youngest wizard barrister, and begins work at the Butterfly Law Offices. While she hasn't realized it yet, she has tremendous magical potential.