I'd never seen this before though I'd read (a translated interview) that Gackt said he was so exhausted at the end of the last number that he was in a daze, almost asleep on his feet, so that his eyes wouldn't focus when he came back on stage and he really imagined that he was in some sort of other state (heaven?) filled with blue butterflies.

It's gripping to see the clip though - you have to be intensely motivated (affection, loyalty, gratitude?) and strong to put your emotions in front of so many people like that. What a wonderful man. Thank you so much for putting the video up.