Rikako Ikee set a pair of Japan records and Yui Ohashi set another on Sunday as the national swimming championships came to a close.
Ikee broke the women's 100-meter freestyle mark she established the day before in qualifying at Tokyo's Tatsumi International Swimming Center. Ikee won her second straight national championship in 53.03 seconds.
The 17-year-old also shaved 0.01 second off her 50-meter butterfly record by finishing in 25.43 to win her fourth race at the nationals.
"I did it all. It was a fun meet," said Ikee, who rewrote her national records six times here.
Ono, who has responded to her disappointing fourth place in the women's 400 individual medley, has since thrown herself into training with new resolve. On Sunday she won in 4:30.82, reducing her previous record time by 0.60.
The nationals are serving as qualifiers for this summer's Asian Games in Jakarta and for August's Pan Pacific swimming championships.