Check the attachment!
Anyway, equip jar rings on every char and use a curio. Attack every jar until one of them turns into that monster! Good Luck!

<t>I take it this is the one you mentioned of... Anyway, to answer your question.<br/> <br/> After you accept the quest, you have to go to the Ruins and fight a monster! Before you fight it, there should be a dialogue just like before fighting any other boss! After you defeat that boss, go back to S...

Yeah....Dolly Forest....Metal Titan monsters.... Overkills...

<t>Hmmm.....<br/> <br/> So, I used 400 gems for the 3rd ring slot, I equiped everyone with 3 block gems, I went to Misery Maze's Curio... Then I used the option to encounter 3 normal fights! After a while, I notice I only got around 25 gems! Am I doing something wrong? Or am I under the false impres...

I use "World End" since it feels quicker! Having all characters's elements at level 99 is very OP! I Still remember how easy it was to get seeds in Asdivine Menace! I should keep going on.....