I got the chest a while ago, so I don't really remeber what I got. However, I have the fire crystal and the magic essence. I have been going there but I no longer understand what is going on. Sorry for wasting your time.
In this case, just visit Ayane and she will help you to tame the essence. If you feel stuck and don’t know what to do next - try the help function from the ”on-map” menu. Ada will give you a hint.
