Career
Loamanu left his native Tonga at the age of 15 to move to Japan on a scholarship. He made his debut for the Japan national rugby union team against Uruguay in April 2005 aged 18 years and 338 days old and became the youngest player of all time to play for Japan (a record since broken by Yoshikazu Fujita). A few days after his second cap against Hong Kong, Loamanu was banned for a year from the Japan team after getting embroiled in a fight involving female professional wrestler Mika Akino in Tokyo"s Roppongi nightspot district.
He was recalled in 2007 and scored a hat trick on his return to the side against of Korea and he played at the Rugby World Cup later that year.
In 2011 Japan coach John Kirwan appealed for the ban to be withdrawn before the Rugby World Cup but the request was turned down by the JRFU who said Loamanu "was not suitable to represent Japan". After being exiled from Japanese rugby, Loamanu moved to Toulon for the 2009/10 season and spent three seasons there.
He was released in 2012, and he joined Benetton Treviso after his former coach John Kirwan suggested the move. In May 2014, Loamanu has signed for English club Leicester Tigers where he will compete in the Aviva Premiership from the 2014-2015 season.
The Japanese Rugby Union decided to lift his indefinite ban in November 2014.