Japan's teenage sensation and Tokyo Olympics hopeful Rikako Ikee said she feels to be closing on Rio champion and world record holder Sarah Sjostrom after dominating the Asian Games women's 100-meter butterfly on Tuesday.

"I am excited about how close I can get to (Sjostrom). I don't want to lose. I want to make a habit of winning," 18-year-old Ikee told reporters as she marked a games record 56.30 seconds in the 100 butterfly, her strong event, at the GBK Aquatic Center in Jakarta.

Ikee has gained momentum since placing sixth in her 2016 Olympics debut, where Sjostrom claimed victory in 55.48, rewriting the world record she set the previous year. Ikee holds Japan's national records in the 50, 100 and 200 freestyle and the 50 and 100 butterfly.

"I was aiming for the 56.50-second range but it turned out I swam faster. I feel my level is getting higher," Ikee said. "Strategy-wise, it was perfect."

Although expressing worries about how tired she felt after the heats earlier in the day, she did not show it in the race, finishing 1.10 ahead of China's Zhang Yufai, who settled for silver.

The Asian Games is her second international competition this month, following the Pan Pacific Championships in Tokyo, where she claimed 100 butterfly gold in a national and meet record, beating American Kelsi Dahlia into second and reigning world silver medalist Emma McKeon of Australia into third.

In her hunger for wins, Ikee has also won the 100 freestyle, 50 butterfly and 4x100 freestyle -- all in games record times. She still aims for gold medals from the 4x100 medley relay, the mixed 4x100 medley, and the 50 freestyle.

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Her goal to sweep all eight of her events was dashed when Japan was second in the women's 4x200 freestyle relay on Tuesday, 5.22 seconds behind China, whose swimmers finished in a games-record 7:48.61.

Prior to these Asian Games, Ikee said she hoped to be named the games' MVP and follow in the wake of swimmers Kosuke Hagino and Kosuke Kitajima, MVPs in 2014 and 2002, respectively. Kitajima went on to be a double gold medalist in the men's breaststroke at both the 2004 Athens Olympics and the 2008 Olympics in Beijing.