The Diplomat Kosaku Kuroda(2011)

The Diplomat Kosaku Kuroda is a Japanese thriller series following a Foreign Ministry operative sent across the globe to safeguard national interests. After thwarting a kidnapping in South America, Kuroda is assigned to protect official Shoko Mikami during a World Trade Organization summit in San Francisco. He reconnects with an informant and a former colleague from his Mexico posting, using their intelligence to stop an extremist attack on Mikami. But when his former associate mysteriously jumps to his death, Kuroda begins unraveling a darker conspiracy. Simultaneously, a murder investigation back in Japan—involving a university professor—emerges as a crucial thread. As Kuroda digs deeper into how the attackers knew Mikami's movements, he discovers connections that pull him between international intrigue and a deadly mystery at home.