Aya, Youji, Ken, and Omi are the four young men who comprise Weiss Kruez (WK), an assassin group who eliminates certain menaces to society. Each member has his own trademark fighting style. Aya is adept at fighting with a katana, Youji has mastered the art of strangulation via strings, Ken is lethal with his metal claws, while O...

Koua is an academy that brings Japanese's most talented people and students together. The mission is to train talented people to bear the world's future leadership. However, recently, the suicide rate in the academy is increasing and there is hardly any information being released to the public. Fujimiya Aya is sent to inflitrat...