The countries meet in their opening Pool C match in Sapporo on Sunday and the presence of Faiva is testament to the talent identification "combines" run by World Rugby to help improve the strength in depth of Tier 2 nations.
Faiva (pictured above) impressed in a World Rugby-funded Pacific Islands Combine in Fiji that featured young talent from across the region, earning himself a contract in New Zealand's Mitre 10 competition.