I just love this pair and wish them the best of luck. It's really a pity that Japan won't allow dual citizenship. That's the big difference between their case and the cases of Katelyn Weaver and Tanith Belbin .. Yes, both girls' new citizenships may have been expedited ( I believe Tanith's was , at least )..but both countries allow dual citizenship. So both these young women can embrace their new countries without having to feel they're turning their back on their roots .
I'm Canadian , and I won't stop loving Narumi and Mervyn's skating whatever their nationality. It will be a difficult decision for Mervyn. I respect the seriousness with which he's facing it , and will respect him whatever he decides to do.
ETA: Another Gauthier team , Utako Wakamatsu and Jean-Sebastien Fecteau competed for Canada and faced a similar dilemma. They placed 8th at Worlds in 2005, ( I think) .In the end ,it was just a step too far for Utako. It was sad, but completely understandable.