Who would win? A lone high school girl, or an armed gang? One school will become a microcosm of Japan!

Yui Yuuri, the daughter of a man sentenced to death for committing the largest terrorist attack in the Heisei era, had no evidence of involvement with her father’s crimes at the time of her discovery at 9 years old. Now, she’s a second-year student at Musashi Kosugi High School. The Prime Minister, aiming to boost his approval ratings, decides to visit the school. As he tours the building with his security detail, mingling with students and teachers, armed forces suddenly storm in. The Prime Minister is on the verge of being taken hostage.

Meanwhile, Yui, who had been assigned to self-study in another classroom, encounters the fleeing Prime Minister and his entourage. Utilizing her exceptional knowledge of chemistry and firearms, Yui skillfully fends off the armed attackers one by one. The armed gang that has taken over the high school remains silent about their specific demands. What is their true objective? What shocking truth lies behind the incident? Follow along as the hostages learn the ugly truth about Japan!

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