Kazumi Kinoshita and Sanae Kanazawa are two high school girls who go on a school trip together with their classmates. Shortly after their arrival at the camp dormitory, various girls become targeted by unknown assailants. In order to solve the mystery the two ******es must talk to their classmates, collect clues, and eventually find the culprits.

Abunai Tengu Densetsu is an adventure game with menu-based navigation and input. Most screens offer a fairly long list of verb commands, some of which must be combined with objects or persons selected from a sub-menu in order to interact with the environment. The game allows the player to visit many different rooms and other locations in any order; however, certain events must be triggered in order to advance, sometimes by repeatedly selecting commands. Certain situations require the player to find items and use them in a different location.