This is a Butterfly Dream Pill.

It's medicine that gives you nice dreams where you fly around as a butterfly.

The person in the Dream World is another self.

The human self and the butterfly self are both real.

Indeed, the Dream World is a real world as well.

If nice dreams aren't your thing, we also have the Nightmare Type.

In the Dream World, you can be anyone and go anywhere you want.

If the self on that side has fun, the one on this side benefits as well.

To the Lunar Capital... yes, even across the barrier... So. What kind of dream would you like, I wonder?