Former Defense Minister Shigeru Ishiba held a news conference Friday to formally announce he will run for the ruling Liberal Democratic Party's presidential race, set for September, saying that he would create an "honest and fair" government if he beats Prime Minister Shinzo Abe to become prime minister.

Specifically, Ishiba said he would immediately carry out "a 100-day plan" to reform government in a bid to regain the trust of the people.

The plan would include reform of the Cabinet Bureau of Personnel Affairs so that bureaucrats would honestly serve for the people, not politicians in power, Ishiba said.