Energy Amplifier/2021-12-24/Places of Interest

According to the intelligence you have uncovered, a special Mutation Stone exists at the many Places of Interest where Irminsul Fruit Fragments were once hidden. Mutation Stones can grant massive bonuses to opponents, greatly increasing their ATK, RES, and resistance to interruption.

In the previous incident, a large amount of Mutation Stones appeared at various Places of Interest due to the influence of the Irminsul Fruit Fragments. You destroyed most of these, but some Mutation Stones remained undiscovered nonetheless.
Now, these remnant Mutation Stones have resurfaced thanks to the passage of time and the ley lines...

Go to the various Places of Interest and clear out the threats there to open treasure chests and obtain rewards afterward.