Nanana's Buried Treasure Episode 11

Nanae Island is a man-made island in the Pacific Ocean that holds everything necessary for the proper education and training of children. It was created by the Great Seven, a group of adventurers headed by Nanana Ryuugajou, as a place for the young to chase their dreams. After being disowned and exiled by his family, high school student Juugo Yama arrives on this island, happy to finally be free o