Kazuma Yagami possesses the power to manipulate the wind, known as "Fuujutsu." He returns to his former home, the noble Kannagi household, after being exiled four years earlier for his failure to control fire and subsequent defeat in a fight by his younger cousin, Ayano Kannagi. Returning from such a violent exile creates numerous issues in and of itself, but to make matters worse, several Kannagi family members have lately been slain using Fuujutsu. This prompts the Kannagi family, especially the fiery Ayano, to accuse Kazuma as the perpetrator. Kazuma must now not only clear his reputation, but also assist the family with whom he shares a common animosity in order to find the actual identity of the killer.