An English navigator and maritime pilot on the Dutch ship Erasmus, he becomes deeply involved in Japanese society. Known for his intelligence and adaptability, he learns the Japanese language and culture, gaining new responsibilities and status.

Mariko's husband, who struggles with alcohol and anger issues, caught in a turbulent marital relationship. Despite their troubled marriage, he attempts to connect with Mariko amid the complications arising from her background.

A Christian convert and samurai interpreter who balances her dual cultural identity while maintaining strong convictions in her faith and samurai code. Her linguistic skills and personal journey play a vital role in various interactions and developments.

The president of the Council of Regents, strategically maneuvering to become shogun. Known for his tactical brilliance, he remains focused on achieving his objectives amid a landscape of political and personal complexity.

A daimyo characterized by cruelty and ambition, whose fluctuating loyalties serve his personal interests. Despite his connections to figures on opposing sides, he remains committed to his own advancement.