Having become the first woman to win five titles at the national championships at the tender age of 16, Rikako Ikee has her sights set on more hardware and another 16-year-old at the world championships in Budapest in July.

Ikee, who competed in seven events at last summer's Rio Olympics, won all her races at the nationals in Nagoya last month, triumphing in the 50-, 100- and 200-meter freestyle as well as the 50 and 100 butterfly.

That feat, unsurprisingly, has many dubbing her as Japan's biggest hope for the 2020 Tokyo Olympics, but the youngster is not getting carried away.