"Life is only interesting when things don't go as planned."

• Name: Kurosaki Koyuki • School: Millennium Science School, 1st Year • Club: Seminar • Age: 15 • Height: 149cm • Birthday: February 14th • Hobbies: Testing her luck, escaping

A student belonging to Seminar, the student council of Millennium Science School, with the codename White Rabbit. She possesses a near-supernatural ability to decrypt any encryption code, but her honest-to-a-fault desires and innocent personality make her a constant troublemaker who causes incidents big and small. While not inherently malicious, her thin sense of morality leads her to commit acts like falsifying her own grades or resetting student records without a second thought, marking her as an exceptional problem child even among the students of Millennium, one of Kivotos's Big Three academies. With her unique decryption skills, she effortlessly breaches even Millennium's highest-level security. She repeats the cycle of escaping, causing trouble, and getting caught so often that she has become well-acquainted with C&C, who frequently come to retrieve her. Akane describes her as walking chaos and a living variable. However, her combat abilities are poorly rated, said to be only at the level of a middle schooler. Seminar originally scouted her for her abilities, calculating that even if she wasn't a huge help, she would at least not cause trouble for her own club. However, Koyuki proved far more uncontrollable than Seminar anticipated, instead abusing her authority as a Seminar officer to cause trouble on an even larger scale.