[waterballoon]

^ Well, that point was supposed to be 'watashi wa', cos right after that line, it's the end part of the chorus! Maybe my ears had a problem, but I definitely heard Peco singing 'watashi wa' (which is correct at that point of the song) and Ayu singing 'watashi ni' (a mistake).

Also, I've watched Over... and it's another weird mystery. "It's Over" is definitely iffy cos the audio came out before the mic was even near her mouth... but after that when the circle stage moves down, you can see that it was very jerky, and her arms were flabbing. At that moment, the 'ta' that she was singing was heavily accented/attacked, clearly showing that her vocals were affected by the jerking motion of the stage... meaning it's most likely live.