Okay, the missing one definitely would be the one from the Ice dungeon then. How many do you have?
You did complete it and cleared the dungeon, i assume?
It also could be just a display bug in the quest. You can count them in key items as well to be sure. And in the save file screen as well I think.
I looked and the music that plays in the battle with Lima is "Battle8"
Just saw you already found it. Yeah rpg maker has some real banger songs^^
I also looked for potential bugs with the world fragment but could not find anything yet. The jaguar quest returns your lost fragment to you like intended. And the Ice Dungeon also seems to work as far as I have seen it.
Did you still having this problem? I alsoways could take a look at your savefile to figure out the potential bug.
Looked at it and it is just a display bug in the quest details. Will fix that with the next patch!
You have all five world fragments so you're save file is fine. You can continue playing without worry. Also no need to be sorry, englich also isn't my native langue either^^
Everything is alright with your save : )