The group pays a visit to Ishana's Phantom Field after receiving an unusual reading. However, upon diving they find the region completely changed and the city unrecognizable. A man calling himself "Hazama" appears before the faltering crew and explains he is looking for six keys in order to escape from the city. By cooperating, will they be able to find the keys? And in doing so, will they be able to escape from this mysterious city? When all six keys have been gathered, the truth of the city will come to light...
Obtain rewards according to the amount of crystallized mana collected! Available rewards can be seen at a glance from the event's top page, by clicking the Point Rewards button!
A special title 戦闘は専門外ですよ Sentō wa Senmongai Desuyo "Fighting's Not My Specialty~" will be available to those who reach 300,000 event points (Crystallized Mana).
Special characters and grimoires provide a drop rate bonus for Crystalized Mana: