I'm looking for the name of a fantasy manga. It starts out with a girl who wakes up in a cave; when she exits, she comes across adventurers. Her name is something like If or Io. She hides her magic powers. She may or may not be part of that world originally. She travels with these mages/swordsmen. I recall there being levels of magic where there's a knight contest, and she also leaves the group to meet a golden dragon.

I've been searching for days. Anyone recognize it?

I think is Id

Ahh, yes!! Thank you so much; I really appreciate it!!

isn't id a guy?