Kenji Miura

In war-torn 17th-century Japan, Tokugawa Ieyasu sends his trusted samurai, Mayeda, and his son Yourimune to Spain. There, they're to buy five thousand muskets. But it is a dangerous journey, and there are many who conspire against them.

A serial killing occurs at a port town brothel.

Assistant police inspector Aida is assigned to investigate the murder of a former gang member. When a justice ministry official is killed days later in a similar manner, he begins to suspect that something bigger is going on...