In pursuit of their dreams, the seven brilliant students known as the GREAT 7 initiate a bold project to build Nanae Island, a haven where young individuals can strive towards their aspirations. Over a decade passes, and the island thrives with a predominantly student populace. Among the newcomers is Jugo Yama, a high school student estranged from his father. His solitary existence takes an unexpected turn when he discovers the ghost of Nanana Ryugajo, the island's deceased founder, in his apartment. Together, they embark on a quest through Nanae Island's ancient ruins in search of the legendary treasures known as 'Nanana's Collection.' Amidst enigmatic puzzles, thrilling treasure hunts, and intellectual clashes, Jugo navigates a world teeming with extraordinary characters. Delve into the gripping tale of Nanana's Buried Treasure, where adventure and mystery intertwine in a captivating narrative.