And even more remarkable, his 13:31 U18 record broke a 13:34 hs record that broke a 13:36 under 18 record, the three times being achieved by three different individuals in the last year and a month (September 2020, November 2020, October 2021).
"Sunday at the Nittai University Time Trials meet in Kanagawa, 17-year-old Keita Sato (Rakunan H.S.) ran a U18 world-leading 13:31.19 in the men's 5000 m Heat 20 to take 3.55 seconds off the high school 5000 m national record of 13:34.74 set in September last year by Kosuke Ishida (Saitama Sakae H.S.). Sato's time also took 5.38 seconds off the U18 national record of 13:36.57 set last November by Taishi Ito (Saku Chosei H.S.)"