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this, post #162019, and the first cut of post #162025 should all be the same animator. It's possible it's Hashimoto but I think it's too different from the rest of his work on the movie - the compositing and obscured shapes make it hard to tell.
Sejoom Kim said in his newtype interview he did a portion of the wunder explosions, seeing as the most of them look like Hashimoto work except for the ones in this upload along with the ones geth highlighted, I think these are actually his work.
gengashuu implies hidetsugu ito