This is strictly my personal opinion, but I have always thought that Yuzu lip-synchs Kimigayo on the podium. I have no opinion about the quality of his singing voice, but have always hoped that he does have a good voice and even wished that he would someday be a singing idol. Having said that, it's been my belief that Yuzu is lip-synching whenever we see him "singing" in public. Maybe he is purposely hiding his singing voice, Ninja Yuzu-style, so that he can blow everyone's minds one day by coming out with a recording without any advance notice. Is that his secret post-professional athlete ambition/career? If there was one occasion when you would have expected Yuzu to actually sing out loud, it would have been the time they had celebrities singing Hana Wa Saku; however, you can see at approximately 20 seconds of the following video that he is initially lip-synching with his eyes closed and then silently looking at the camera for the remainder of his appearance. I think that a lot of Fanyus had looked forward to seeing this video in anticipation of actually hearing Yuzu sing. For better or worse, Yuzu does not wish to reveal his singing voice.