A long time ago, there were two little bugs who loved each other. They were always together and never separated. But one day, one little bug left the other little bug because of something. It didn't tell the other little bug the reason why it left, because it knew that after leaving, it was very likely that it would never come back. No. It doesn't want to come back, but it can't come back. It thinks: if it can come back, it must stay with another little bug for a lifetime, but... It never comes back. From then on, the other little bug turns on the light every day to look for traces of that little bug. This is the reason why fireflies can glow...
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