This version digs into what sets the suiko apart: it is not a creature of oral legend but one shaped within the pages of books. Where the kappa was born from the fears of riverside life and took on countless forms and names from region to region, the image of the suiko travelled almost entirely through citations in Chinese materia medica and gazetteers. That is why its defining features stay remarkably consistent — a body the size of a small child, hard scales, the habit of baring its carapace on the autumn sand, and the trick of showing only its knees above the water.

Japanese scholars cited these Chinese accounts while puzzling over how to square them with the kappa right in front of them. The *Wakan Sansai Zue*^[2] placed the two side by side and cautiously judged them "alike yet not the same," while the *Suiko Kōryaku*^[4] tried to file reports of water creatures from across the land under the heading "suiko." Toriyama Sekien's illustration in the *Gazu Hyakki Yagyō*^[3] is likewise a picture drawn from this continental learning. There are articles touting ways to capture it or its medicinal uses, but interpretations differ from book to book, and the truth remains unclear. The suiko, in the end, is a second face of the water spirit — the trace left by an early-modern attempt to reinterpret the familiar kappa through the lens of Chinese scholarship.