Ryuugajou Nanana no Maizoukin (TV)  

Nanana's Buried Treasure, ล่าขุมสมบัติปริศนา นานานะ

Nanae island is an artificial island in the pacific ocean that serves as a platform for child education and training. the great seven, led by nanana ryuugajou, constructed it to provide young individuals with opportunities to pursue their aspirations. after being disowned and exiled from his family, juugo yama arrives on this island, excited to finally gain independence. upon settling into his new room, he encounters the spirit of nanana ryuugajou, who was murdered 10 years prior and is now bound to the island. she informs juugo that she hid mysterious items with special abilities throughout the island before her demise - these are known as the nanana collection. driven by a desire to uncover evidence leading to his mother's killer, juugo, along with tensai ikkyuu and daruku hoshino, embarks on an investigation.

Ryuugajou Nanana no Maizoukin adapts the first 3 novels of Kazuma Ootorinos light novel series of the same title.