The moonlit sky, visible from the hills above Hyakuna, are decorated with brilliant stars. We are reminded of the poems of Shuntaro Tanikawa. From which collection, which phrase, we’ve been long forgotten. But he described the night sky as being made from a curtain of immense cloth, and wherever there were holes, the sun’s rays would leak through. He said that those were stars.
And so, it means that the sun isn’t necessarily at rest at night.
He’s working too hard.