モルモル(ケムリクサ)
The given name for a unnamed scrapped design for Kemurikusa that appeared in the Kemurikusa IROIROBOOK, which depicted an animal of sorts, which made that sound. After the release of IROIROBOOK, fans discovered the design and began making fanart of it, to Tatsuki's "surprise":[https://twitter.com/irodori7/status/1181211520971051008].
morumoru (kemurikusa)