From his hand, the man spinkled what looked like flower seeds. "Yu yu? Are these the sweet-sweets?" "Thats right, eat up" was the gentle answer. "Yu yu -munch-, happiness!" "HafuHafu*! Sweet! This shit is good!" Soon they had all started eating. The man left the field after a while unnoticed.
*Sound of talking with a full mouth. Indecypherable.
I still say there's no sensible way the yukkuris could still reasonably survive in the meta fandom that created them. YES, I know they're magic fictional etc, but if we follow the narrative of these comics and notice how bad they are at existing, there's no reason, other than exceptional breeding ability (and some even say they aren't as fast as roaches), they could survive as a species.
Then there's the whole beanpaste as a deterrent to wild predators theory, and some other sweeter species would not be as popular as a prey except to insects...