Yoshiko Tajimi

Yoshiko Tajimi is the Prime Minister of Hokuto and one of the main antagonists of Kamen Rider Build.

Though claiming to focus on agriculture and child care, in truth Tajimi primarily uses Hokuto's budget to fund military research. She seeks to conquer the other two nations within Japan and in episode 16 launches an invasion of Touto.

History
Tajimi is first seen meeting with the other Prime Ministers via hologram to each deliver their monthly report. At the meeting Tajimi claimed that Hokuto's latest child care and agricultural programs had been a success. When Taizan Himuro, Prime Minister of Touto, suggested they make unified movements both she and the Prime Minister of Seito, Masakuni Mido, declined.

At a later meeting with Prime Minister Himuro, Tajimi criticizes him for failing to deal with Build and Ryuga and accuses him of allowing them to go into Hokuto on purpose to cause a widespread panic. In response Gentoku Himuro, the Prime Minister's son, ridicules her hostility towards Touto and terminates her transmission.

Tajimi later declares an invasion of Touto, planning a quick, decisive victory over Touto due to her own nation's failing economy. However, due to her sending most of her forces to invade Touto, Hokuto was left with little forces to defend its borders, prompting Seito to take the opportunity to invade and conquer Hokuto.