Honestly I think it's sad and just shows how cruel entertainment business can be.
I mean there's narimiya who had to drop out of school to work at 14 to take care for his little brother because they had no parents and then he works hard and becomes someone well known and respected and suddenly after all these years without any scandals, some tabloid releases some black and white pictures which don't show anything at all and some random taped phone conversation he had with a "friend" over alleged drugs.
I totally get that he doesn't want anything to do with this industry anymore especially now that the tabloids are eyeing him more than ever and would probably release everything they get from him from now on. And that he can't even trust his good friends anymore, now that one of them has betrayed him so bad.
But still I'd rather him wash his name clean if he really is innocent and then retire instead of retiring now and people wondering if those allegations were true.
And I don't think he'll make a comeback in a few years, because he's already 34, this time now is crucial for him and his further career but I hope he at least made enough money to live comfortably now and in peace if he doesn't want to come back, he seems like a good person and I liked him as an actor