Sakai Taichi

Naito Naito, a second-year high school student who has the ability to survive in any situation, teams up with Ryuo Soya, a talented boy whose father is the head of the Ryuo Group conglomerate. Along with others, they challenge "Area Z," a game created by a genius known only as "Kurii Eita." Can they complete their mission to save the city within 6 hours? An original story based on the characters of Hayamine Kaoru's mystery novels.

When they find out their community is plagued by debt, three high schoolers in an old country town set out in search of some ancient buried treasure.