The Sakura Sevens beat Hong Kong – in the final to record an impressive third Cup title from three on the Asia Rugby Sevens Series.
Having beaten China, Kazakhstan and now Hong Kong in the three respective finals Japan’s form continued in Sri Lanka.
Honoka Tsutsumi got Japan off to a flying start before two tries from Yume Hirano helped them to a convincing 31-0 win.
The results from the series mean that Japan, Kazakhstan and Hong Kong will compete at next year’s World Rugby Women’s Sevens Series qualifier in Hong Kong.
Having beaten Kazakhstan 26-12 in their semi-final the Asian champions also guaranteed an appearance at what will be a home tournament for them at the Kitakyuhsu Sevens.
Hong Kong, who reached their first final of the series, beat China 17-7 in an impressive performance that saw them dominate possession and territory throughout.
Ka Yan Chong scored twice in the win, the first after a five-minute sustained period of possession, either side of a sensational length of the field try from Pak Yan Poon.
Hosts Sri Lanka finished fifth in the competition for a third successive time by beating Thailand 7-5 to the delight of the home crowd after China finished third with a 17-12 win over Kazakhstan in sudden death extra time.