The new Abe Cabinet held an extraordinary session today (Aug. 29, a Wednesday; the Cabinet meets twice a week on Tuesday and Friday) and appointed the 22 senior vice-ministers (LDP 19, New Komeito 3) in the respective ministries and the Cabinet Office. For the appointees - In the case of the LDP, third (or in rare cases fourth) term Lower House Members and second term Upper House members - this is an important step in building resumes, and they are expected to use the opportunity to familiarize themselves with the territory and the people who populate it, and the bureaucracy does its best to oblige. As a result, they tend to become close to their respective ministries and their jurisdiction.
You may have guessed that a senior vice-minister does not wield much real power. That is also evident from something Asahi points out quite baldly in its headline Deputy Vice-Minister Emphasis on Factional Balance, 22 Appointed as well as the text, which gives the following list:
Tsushima faction 4, Machimura faction 3, Koga faction 2, Yamazaki faction 2, Ibuki faction 2, Tanigaki faction 2, Komura faction 1, Aso faction 1, Nikai faction 1, Unaligned 1.
Note that the largest Machimura faction has one fewer than the next largest Tsushima faction. That is only appropriate, since the Prime Minister's faction is expected to show humility in dividing the spoils. Also significant is the fact that the Tanigaki faction is the only U-16 micro-faction to have two. Consider this an analgesic for being shut out (against Mr. Mori's advice) from the Cabinet and the main party posts.
For even more junior coalition Diet members, there are the parliamentary vice-minister appointments. Expect more of the same.