Plenty of thanks to Toysdaily members gundamrx782 and secretzone for sharing so many photos on the forum:
↓ images from gundamrx782:
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So many people! O_O
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Right beneath his legs ^^
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The mist emitting gimmick is on during the day as well it seems ^^
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Even more beautiful during the night ^^
↓ images from secretzone:
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Sunny Plaza limited HG 1/144 Gundam RX-78-2 Ver. G 30th Green Tokyo Gundam Project
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The manual has introduction on the entire process from designing to building the statue ^^
All images from Toysdaily: Link 1 (images from gundamrx782), Link 2 (images from secretzone)