A Photon Crystal? I don't think I've heard of those. If you mean Drops or Spheres those are legit. And here's how to use them.
In an online game, you must go to the quest named, "Gallon's Shop" (Youll be in episode 2's Pioneer 2) Go to where all of the telepipes would be set if you were to be playing a regular game, and if you turn around you should see a FOnewm. Talk to him and (Make sure you have some on you) he'll say his father collects those. Say you want to met him, then he will offer you items for all the drops/spheres you have. (Just your character, not your bank) Depending on how many you have, he will offer items.
Sol has made a lovely guide on this with an accurate table of what you can find.
EDIT: I'm sorry I didn't read your post entirely. If Pagini isn't interested I don't know then. Can you get a picture of it?
In an online game, you must go to the quest named, "Gallon's Shop" (Youll be in episode 2's Pioneer 2) Go to where all of the telepipes would be set if you were to be playing a regular game, and if you turn around you should see a FOnewm. Talk to him and (Make sure you have some on you) he'll say his father collects those. Say you want to met him, then he will offer you items for all the drops/spheres you have. (Just your character, not your bank) Depending on how many you have, he will offer items.
Sol has made a lovely guide on this with an accurate table of what you can find.
EDIT: I'm sorry I didn't read your post entirely. If Pagini isn't interested I don't know then. Can you get a picture of it?