Syakuga.rar [VERIFIED]

The origin of the Syakuga.rar filename is murky, but forensic tracing on imageboards (like 4chan’s /ic/ board or Reddit’s r/DataHoarder) suggests three possible sources:

Rare X-sheets (timing sheets) that show exactly how an animator timed a specific sequence. Why it Matters Syakuga.rar

Is "Syakuga" referring to specific animation frames () or a specific artist ? The origin of the Syakuga