D88EC7E8-E3FB-4F6D-A2CE-00F7A1C48C48@1xCreated with sketchtool.
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D88EC7E8-E3FB-4F6D-A2CE-00F7A1C48C48@1xCreated with sketchtool.ニコニコ動画で視聴

Quantum＋Quaternion (down) / 量子と四元数 (下)ニコニコ動画で視聴

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Quantum＋Quaternion (down) / 量子と四元数 (下)

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https://nico.ms/sm44409060?ref=thumb_watch