"A Blue Orb appears...." (Abandoned Aqueduct)

[Osamaru]

So in the Abandoned Aqueduct, there is a "Hidden" shire on one of the ledges (I used the Flight Equipment to get to it) that appears to me a Meteor with crystals surronding it. You can donate 1 lunar coin to it, and it gives the message "A blue Orb appears".
But I wasn't able to figure out what that was before i died.

Anyone have any idea yet?

[Azulfo]

Opens a Portal to the Secret Shop/Lunar Shop after doing the Teleport fight.

Pretty sure on that.

Think the blue orb is floating around the Teleport button.

[Arcane Stars]

After you've beaten the boss for that area it will spawn a portal to a cave area that's a shop for lunar coins.