A former Japanese boxer ?
The guy should show a bit more respect for his sport and for the fans and stop taking stupid fights. Not sure about how he wants be remembered in the history of boxing but that doesn't do much good to his reputation.
I don't think he is immune, he answers every criticism on him by media, and I'm sure with the latest round of attacks if ever he accepts another fight from Japan, he will just answer that he's really in for the money, I guess. Legacy for him is not that important, he is greedy and will make more money of every chance he can get.
It the fight pushes through then it will be just for the sake of Japanese community, although I'm not sure about his first fight though it is is stream live in the US as well. Didn't check it because that fight is as scripted as it can get.