Tim Bateman has put family first in his decision to leave the Hurricanes at the end of the Super Rugby season.
The second-five will return to Japan on a two-season contract and link with the Coca-Cola West Red Sparks in Fukuoka where he played between 2010 and 2012 before he moved to Wellington to join the Hurricanes.
Bateman's wife Laura was diagnosed with multiple sclerosis last year and he said limited treatment options in New Zealand meant his hand was slightly forced as he looked to continue his playing career.
"She needed to show a level of deterioration before they fund her treatment whereas you can go away and it became a bit of a no-brainer really," Bateman said. "It's been a long process and it's not that nice seeing her struggling a little bit and not getting what she needs. So we made the decision to go."
Bateman said the West Red Sparks club had been accommodating of his wife's needs and they would live close to Japan's top specialist on the disease.