parliamentary vice-minister; deputy minister; assistant minister
A political appointee in a Japanese ministry, assisting the minister. The term is specific to the Japanese government system; in other contexts, 'deputy minister' or 'assistant minister' may be used.
He was appointed parliamentary vice-minister of the Ministry of Foreign Affairs.
The parliamentary vice-minister assists the minister in the Diet.
He was appointed parliamentary vice-minister of the Foreign Ministry last month.
She served as parliamentary vice-minister for two years.