"Wow, the universe sure is fascinating..."

"What's the matter? Are you saying there's nothing fascinating on Earth?"

"At 16:31, I saw the evening star.
: It's just that there are hardly any mysteries left on Earth."

"If I could see all the mechanisms of this world like you Renko, I think I would start to become nihilistic."

"That's why I envy your eyes, Merry.
:You can see plenty of mysterious worlds.
:Besides, I wanted you to see the gap in the moon's boundary."

"I would, if the fare was lower."

The boundary is not part of the Earth; it's just a border, so it is only natural for the moon to have one as well.
The boundary of the moon is one which separates the dazzling Lunar Capital from the desolate, lifeless satellite. As long as the boundary exists, even if you went to the moon, you couldn't get any of the rice cake or medicine the moon rabbits are making; at most, a moonstone.

"The moon may be hiding a forgotten world; a lunar capital with an advanced civilization where nobles live.
:Rabbits would make medicines of immortality while gazing at the three-legged crow living in the sun and worry about mankind's excitement about the Moon Tour.
:You are the only one who can see that world, Merry."

"You're right. I want to go there before humans gather and colonize all of it."

"If it's decided then, let's start preparing."

"If we want to see the Lunar Capital, maybe we should learn more about it.
:About the ancient moon that has been forgotten for a long time.
:About the dazzling moon capital of legend.
:About the moon that symbolizes insanity.
:Yes, knowledge will help discern the gap in the border."

"Wait, in my opinion, what we have to take care of first is getting a part-time job, so we can make enough money to go there."