parliamentary official; parliamentary secretary
A government position, often a junior minister or parliamentary vice-minister, assisting a cabinet minister in policy and parliamentary affairs.
He was appointed as Parliamentary Vice-Minister for Foreign Affairs.
The parliamentary secretary assists the minister in answering questions in the Diet.
副大臣 is a senior vice-minister, ranking above 政務官 and often handling broader responsibilities.
parliamentary secretary
Compound of 政務 (seimu, 'government affairs') and 官 (kan, 'official').