The story centers around the treasure of Nanana, a ghost who was once a beautiful but NEET (Not in Education, Employment or Training) girl. A boy named Juugo 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 month to live on, Juugo chooses a low-rent apartment that happens to be haunted by Nanana. Juugo 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.

The man-made island of Nanaejima houses a population mostly consisting of high school students. The island is equipped with state-of-the-art research facilities that are open to all students on the island. Juugo Yama was exiled from his home and forcibly sent to the island of Nanaejima to attend the local high school. With a limited budget, he chose the cheapest apartment he could find, but there was a catch. The apartment is haunted by Nanana, a girl that was murdered in the room. Nowhere else to go, he will now have to live with his ghostly roommate and venture into the world of treasure hunting with his classmates in order to release Nanana.

The story centers around the treasure of Nanana, a ghost who was once a beautiful but NEET (Not in Education, Employment or Training) girl. A boy named Juugo 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 month to live on, Juugo chooses a low-rent apartment that happens to be haunted by Nanana. Juugo 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.

Side stories of Ryuugajou Nanana no Maizoukin bundled with the first press release of all 6 Blu-ray/DVD volumes of anime.

The story centers around the treasure of Nanana, a ghost who was once a beautiful but NEET (Not in Education, Employment or Training) girl. A boy named Juugo 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 month to live on, Juugo chooses a low-rent apartment that happens to be haunted by Nanana. Juugo 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.

This is a story in which "four people" who have never been saved by anyone trying to save someone else. At the same time, it is a story that ends with "four people" being saved. (Source: MFBunko, translated)