Fonua-Blake is back in red after playing one Test match for New Zealand last year, an experience he doesn't regret but one that later provided him with clarity of where his heart was placed in the future.
He is the fifth player in Kristian Woolf's Tongan squad to have had ties to New Zealand Rugby League.
"I really enjoyed my time with the Kiwis but it just didn't feel like home," Fonua-Blake told NRL.com.
"I knew straight away after the World Cup finished, I was jealous of all the support they had and I envied all the boys.
