There was a man with a suspicious smile looking at the students of the prestigious Excellent Girls’ Academy.
Excellent Jogakuen is a super-lady school where the daughters of powerful people and wealthy people who hold politics and economics around the world attend.
The man had a “grudge” at such an excellent girls’ school.
One day he is suddenly given a “time-stop gun” by a mysterious person.
At first he didn’t believe it at all, but when he found out that his power was real, he infiltrated Excellent Girls’ Academy and targeted a sister.
Kanako Tachibana, the daughter of the director of Excellent Jogakuen and the student council president, and her younger sister, Hina Tachibana.
Their happy daily lives are suddenly buried.