Possible Clues:

• Means of self-defence for half a month as said before
• Throwing sport (from the Japanese for gentleness)
• Literally, "the gentle way"
• Aikido kin
• Little woman shelters return of the French fighting in Tokyo
• Discipline with chops
• Olympic sport debut of '64
• Kayla Harrison's Olympic martial art
• Putin's martial art
• Wrestling sport adapted from jujitsu