Star doors part 2? *spoilers*

[TLK777]

So by chance I discovered that the star door that I opened with Tita early on in the game has a part 2 that is only accessible with Agate in your party. I'm not sure how I was supposed to know about this though. The door's description did not say anything about him. obviously his imminent arrival is said a few times in the story, but thats hardly good enough. Are they expecting me to go back to every door with every party member just to test? Thanks

[Dr. Rudolf von Richten]

That's a Moon Door (Moon Door 1), not a Star door. Pedantry aside, Moon Door 1 is the only Moon or Star door with a 'part 2'. All the Sun Doors except Sun Door 1 are multi-part though, but except for Sun Door 3, you don't need anything for the subsequent parts beyond completing the previous ones. For Sun Door 3 part 2 and 3 you need to find certain items. Also note that some Moon and Star doors have different conditions than 'bring the right character'.

[TLK777]

ok i think it makes sense. Thanks!

[Dr. Rudolf von Richten]

You're welcome! :-)

[Oguzhan]

Also, when you examine the door again, it tells you to get Agate if I remember correctly. When you finish it with Tita, it says "part 1 completed", so you assume there is a part 2 and when you examine it, it tells you to get Agate.
Or at least that's how it should be, I haven't checked the door without getting Agate, in a long time.

[[Z.E.] Gri-49]

Actually, it tells you a vague hint on who to bring to get the door open.