Aya, Youji, Ken, and Omi form the core of Weiss Kreuz (WK), a covert unit that eliminates threats to society. Every member possesses a unique fighting trademark: Aya commands a katana with lethal precision, Youji specializes in strangulation techniques using silk ropes, Ken wields razor‑sharp metal claws that tear through armor, and Omi masters a vast arsenal of projectile weapons. Their operations are directed by an enigmatic figure known only as 'Persia,' who assigns them to dismantle drug rings, terrorist cells, and other syndicates. As the missions unfold, they uncover a startling pattern: most of the enemies they've neutralized are tied to the influential Takatori family. The Takatori clan is wealthy, powerful, and entrenched in Japan"s political landscape. To truly eliminate the threat, WK would ultimately have to confront and dismantle one of Japan"s most prominent families. Such a confrontation would ripple through the nation's power structures, threatening to upend long‑standing alliances.