Koujirou Asai

Koujirou Asai (朝井 孝次郎) is the Prime Minister of Japan who is in office for the entire time period of the Kaiju World War Saga and first appears in the film Taigaia vs. Senryuukaku.

Taigaia vs. Senryuukaku
Koujirou is the leader of Japan's ruling political faction, the Liberal National Party. He is a second-generation member, as his father was a former Minister of the Interior, and his brother is a senator. He is a populist politician who is popular with the public for his cleanliness, sweet looks, and good speech. He won the bicameral double election in 2028 due to the disappearance of the corrupt former Prime Minister Yoshima Kuroi, who was the secretary-general of the People's New Party, and assumed office at the young age of 50, becoming the fifth Prime Minister during Emperor Naruhito's reign.