The annual unified college entrance examinations are held at the University of Tokyo on Jan. 19, 2019. The two-day event began across Japan with more than 570,000 applicants and 852 public and private institutions taking part. (Pool photo)(Kyodo via AP Images) ==Kyodo

Students leave the University of Tokyo after the National Center Test for University Entrance Examination in Bunkyo Ward, Tokyo on January 20, 2019. The two-day test took place at 693 locations nationwide with 576,830 applicants, a decrease of 5,841 from the previous year. ( The Yomiuri Shimbun via AP Images )

Students leave the University of Tokyo after the National Center Test for University Entrance Examination in Bunkyo Ward, Tokyo on January 20, 2019. The two-day test took place at 693 locations nationwide with 576,830 applicants, a decrease of 5,841 from the previous year. ( The Yomiuri Shimbun via AP Images )

Students leave the University of Tokyo after the National Center Test for University Entrance Examination in Bunkyo Ward, Tokyo on January 20, 2019. The two-day test took place at 693 locations nationwide with 576,830 applicants, a decrease of 5,841 from the previous year. ( The Yomiuri Shimbun via AP Images )

Students leave the University of Tokyo after the National Center Test for University Entrance Examination in Bunkyo Ward, Tokyo on January 20, 2019. The two-day test took place at 693 locations nationwide with 576,830 applicants, a decrease of 5,841 from the previous year. ( The Yomiuri Shimbun via AP Images )

Japan's Crown Prince Naruhito visits an exhibition, VERMEER Making the Difference: Vermeer and Dutch Art, at the Ueno Royal Museum in Tokyo on January 18, 2019. The Emperor's abdication will be on April 30, 2019, and his eldest son, Crown Prince Naruhito's succession to the throne on the following day May 1st. ( The Yomiuri Shimbun via AP Images )

Students head for the National Center Test for University Entrance Examination at the University of Tokyo in Bunkyo Ward, Tokyo on Jan. 19, 2019. The two-day test began at 693 locations nationwide with 576,830 applicants, a decrease of 5,841 from the previous year. ( The Yomiuri Shimbun via AP Images )

Examinees prepare for taking the National Center Test for University Entrance Examination at the University of Tokyo in Bunkyo Ward, Tokyo on Jan. 19, 2019. The two-day test began at 693 locations nationwide with 576,830 applicants, a decrease of 5,841 from the previous year. ( The Yomiuri Shimbun via AP Images )

Examinees prepare for taking the National Center Test for University Entrance Examination at the University of Tokyo in Bunkyo Ward, Tokyo on Jan. 19, 2019. The two-day test began at 693 locations nationwide with 576,830 applicants, a decrease of 5,841 from the previous year. ( The Yomiuri Shimbun via AP Images )

Examinees prepare for taking the National Center Test for University Entrance Examination at the University of Tokyo in Bunkyo Ward, Tokyo on Jan. 19, 2019. The two-day test began at 693 locations nationwide with 576,830 applicants, a decrease of 5,841 from the previous year. ( The Yomiuri Shimbun via AP Images )

Examinees prepare for taking the National Center Test for University Entrance Examination at the University of Tokyo in Bunkyo Ward, Tokyo on Jan. 19, 2019. The two-day test began at 693 locations nationwide with 576,830 applicants, a decrease of 5,841 from the previous year. ( The Yomiuri Shimbun via AP Images )

Examinees prepare for taking the National Center Test for University Entrance Examination at the University of Tokyo in Bunkyo Ward, Tokyo on Jan. 19, 2019. The two-day test began at 693 locations nationwide with 576,830 applicants, a decrease of 5,841 from the previous year. ( The Yomiuri Shimbun via AP Images )

Students head for the National Center Test for University Entrance Examination at the University of Tokyo in Bunkyo Ward, Tokyo on Jan. 19, 2019. The two-day test began at 693 locations nationwide with 576,830 applicants, a decrease of 5,841 from the previous year. ( The Yomiuri Shimbun via AP Images )

Students head for the National Center Test for University Entrance Examination at the University of Tokyo in Bunkyo Ward, Tokyo on Jan. 19, 2019. The two-day test began at 693 locations nationwide with 576,830 applicants, a decrease of 5,841 from the previous year. ( The Yomiuri Shimbun via AP Images )

Students head for the National Center Test for University Entrance Examination at the University of Tokyo in Bunkyo Ward, Tokyo on Jan. 19, 2019. The two-day test began at 693 locations nationwide with 576,830 applicants, a decrease of 5,841 from the previous year. ( The Yomiuri Shimbun via AP Images )

Students head for the National Center Test for University Entrance Examination at the University of Tokyo in Bunkyo Ward, Tokyo on Jan. 19, 2019. The two-day test began at 693 locations nationwide with 576,830 applicants, a decrease of 5,841 from the previous year. ( The Yomiuri Shimbun via AP Images )

Students head for the National Center Test for University Entrance Examination at the University of Tokyo in Bunkyo Ward, Tokyo on Jan. 19, 2019. The two-day test began at 693 locations nationwide with 576,830 applicants, a decrease of 5,841 from the previous year. ( The Yomiuri Shimbun via AP Images )

Students head for the National Center Test for University Entrance Examination at the University of Tokyo in Bunkyo Ward, Tokyo on Jan. 19, 2019. The two-day test began at 693 locations nationwide with 576,830 applicants, a decrease of 5,841 from the previous year. ( The Yomiuri Shimbun via AP Images )

Students head for the National Center Test for University Entrance Examination at the University of Tokyo in Bunkyo Ward, Tokyo on Jan. 19, 2019. The two-day test began at 693 locations nationwide with 576,830 applicants, a decrease of 5,841 from the previous year. ( The Yomiuri Shimbun via AP Images )

Students head for the National Center Test for University Entrance Examination at the University of Tokyo in Bunkyo Ward, Tokyo on Jan. 19, 2019. The two-day test began at 693 locations nationwide with 576,830 applicants, a decrease of 5,841 from the previous year. ( The Yomiuri Shimbun via AP Images )

Students head for the National Center Test for University Entrance Examination at the University of Tokyo in Bunkyo Ward, Tokyo on Jan. 19, 2019. The two-day test began at 693 locations nationwide with 576,830 applicants, a decrease of 5,841 from the previous year. ( The Yomiuri Shimbun via AP Images )

Students head for the National Center Test for University Entrance Examination at the University of Tokyo in Bunkyo Ward, Tokyo on Jan. 19, 2019. The two-day test began at 693 locations nationwide with 576,830 applicants, a decrease of 5,841 from the previous year. ( The Yomiuri Shimbun via AP Images )

Students head for the National Center Test for University Entrance Examination at the University of Tokyo in Bunkyo Ward, Tokyo on Jan. 19, 2019. The two-day test began at 693 locations nationwide with 576,830 applicants, a decrease of 5,841 from the previous year. ( The Yomiuri Shimbun via AP Images )