In episode 3 of Chargeman Ken, a Juralian speaks to some of the flesh-eating butterflies that have been plaguing Japan (and perhaps, elsewhere):
Oh, my lovelies. The Earthlings are in a panic over you. According to the Earthlings, you went extinct 50 years ago. My lovelies, until that day comes, be my power!
Nobody knows that I saved you 50 years ago, and that I improved you to eat human cells and multiply! All so that you would destroy the Earth!
[Text taken from Crunchyroll subtitles; paragraph breaks are my own.] What does the Juralian mean by until that day comes? Normally, it would seem to refer to the day 50 years ago when the Earthlings thought that species of butterfly extinct. However, this is not a good reading, since the Juralian indicates that this day has not come yet.
Does it perhaps refer to the day when that species of butterfly does in fact become extinct, or to the day when the Earth will be destroyed?