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IF contains four scenarios, which are unrelated to each other and can be accessed directly from the main menu:
The first scenario stars a 19-year-old young man who accidentally makes a wish and summons a cute-looking female demon, who is ready to serve his “master”… in various ways, including what you just thought.

This scenario is sub-titled Triangle, and is dedicated to a high-school student who has a rather uneasy relationship with the girl he likes. One day he meets a female childhood friend, which further complicates his love life…

Set in medieval (feudal) Japan, the scenario tells the story of a young man who is on his way to the capital city, to study martial arts by a famous teacher. He gets sick and has to stay in a mountain village. Soon he notices that strange things begin to happen there, and has to find a way to release a woman from a curse that was placed on her.

The last scenario is set in a small village that lies deep in a forest, in a fictional country, and focuses on a young boy named Indy. He fancies the daughter of the village elder; one day she is kidnapped by strangers, and Indy swears to rescue her.
All the scenarios have the gameplay of a visual novel: the player reads the vast amount of text that accompanies the pictures, choosing actions or dialogue choices from time to time. The first two scenarios feature branching story and Game Over moments; the two others develop in a linear fashion and have only one ending.