About the "friendly monsters"

[Cid Vicious]

If the battle ended and the friendly Garuda gave you a Diamond, then you've satisfied his need.
Try giving the Diamond to Yan. If he still won't accept it, then there's got to be someone else you've missed

[H-Kazami]

I'm pretty sure I did all of them 'cause I had a checklist, and I check off every monsters when I encountered them and satisfied their needs.
Anyway, I gave up on saitisfying Yan and went to fight with Ozma, and forunately, I succeed in winning after a few tries. Thankies for everyone who tried to help here =D

I figured it could be a bug or whatever the problem is going on = =;;
Unless I satisfied a friendly monster but didn't save the data XO