Yoshihide Suga
Yoshihide Suga, now the Prime Minister of Japan, served as Chief Cabinet Secretary under Shinzo Abe for eight years, making him the longest-serving Chief Cabinet Secretary in history, having overtaken the previous record of 1,289 days in office set by Fukuda on July 7, 2016. Suga was replaced by Katsunobu Katō, who previously served as the Minister of Health, Labour, and Welfare.