The story centers around the treasure of Nanana, a ghost as once a beautiful but NEET (Not in Education, Eo was disowned by his father and forced to transfer to a high school on the “Special Student Zone,” an artificial island With only 40,000 yen a o chooses a low-rent aparto and members of the school’s adventure club join a “treasure hunt royale” on the island for the Nanana Collection, a treasure that possesses a mysterious power