Takanori Nagase defeated Mongolia's Saeid Mollaei in the men's 81-kilogram final, snatching another judo gold for Japan at the Tokyo Olympics on Tuesday.
Nagase, an Olympic bronze medalist in Rio five years ago, became the first Japanese to win this event since Makoto Takimoto achieved the feat at the 2000 Sydney Games.
Five-time world champion Clarisse Agbegnenou of France, meanwhile, did not disappoint as she won a rematch of the Rio Games final against Tina Trstenjak of Slovenia to capture her maiden Olympic title in the women's 63-kg class.