The Japan swimmers who will compete in the World Championships in Fukuoka City in July participated in the Tokyo Metropolitan Championships. Former world record holder Ippei Watanabe won the men's 200-meter breaststroke at the Tokyo Swimming Championships held in Koto-ku, Tokyo with a good time.

Yui Ohashi, who won the gold medal in this event at theTokyo Olympics, participated. She swam strongly in the first half to take the lead, and then ran away with a time of 2:11.21.