freeOK概要：When digital indigenous Benjie turns 18 next year, he inherited a box of ancient artifacts from his missing father. He handed an ancient book to the girl he was following, Slien, and unintentionally triggered a chain reaction. An old man named Zeppes is also very interested in this book that once belonged to the cartographer Mercato. Using the secret information in Mercator's book, the three of them unraveled the mystery and had to take a step ahead of a mysterious opponent.
