I've barely seen any posts about this creator Yamamoto(山本) who has some pretty good works
I'm looking for the full version of this video:
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Incidentally for anyone else interested in his works, I've managed to collect a lot of his videos from here and there, I'm not entirely sure if that's all of them but from what I can tell it's probably all of them:
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(Most of his Fantia content is here except a few)
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(Missing Fantia content that's not on Kemono)
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(For whatever reason this video is listed as the author's work but doesn't show up on the author's page)
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(This one too)
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(This contains all of his old works that were deleted [According to OP], File is from a thread in Iwara where someone was kind enough to share this)