This is a world teeming with bizarre supernatural abilities. A timid, cowardly boy lost some of his memories in a childhood accident. After awakening his own ability, he inherited a legacy from another world. Because of those forgotten memories, he later discovers that the tall, busty class monitor was once his biggest fangirl and sidekick, while the gloomy girl who seems to have no presence at all isn't even from this world. The petite girl he regards as an ordinary friend becomes his greatest obstacle because of a promise they made in childhood.
Under the gaze of beings from both worlds, how will the boy preserve an elusive peace? And how will he recover his lost memories and give the girls the answers they deserve?
