Rugby is much more than just a game for All Black powerhouse prop Ofa Tuungafasi.

It has also proven to be a financial lifeline for his family.

Tuungafasi will travel to Japan on Monday with the 30 other members of coach Steve Hansen's squad who are seeking a staggering third successive Rugby World Cup triumph.

The All Blacks wrap up their home preparations for the tournament against Tonga in Hamilton this afternoon, with the Blues star to start the test against his birth country from the bench.

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The Tongan-born prop heads to Asia almost 14 years after relocating to New

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