Team Kiryu argument:
Well first off, Kiryu's done a loooot of karaoke over the ages. He's pretty much legendary in Japan for it, literally being ranked as the highest in any karaoke place he goes to. What's more, he's literally the vocalist for the song in the first place! It's pretty hard to imagine anyone able to take the same words and song and make it better.
And he's not only got the voice down, Kiryu's got intensity and stage presence too! Here's an example of him flaunting that with this same song:
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I have no idea who you are, but I thank you for arousing me. - Beruga
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