Then I remembered when Renko mentioned "an entrance in Rendaino".
Did she find out where the entrance is from this picture?
"It's easy. We can see where the moon and the stars are pictured, can't we?"
According to Renko, she can tell what time it is by the stars and where she is by the moon.
Renko is [bad word] I have unsettling eyes, I think her eyes are more unsettling than mine.