Kazuma Kannagi, who was exiled four years earlier for his defeat and his lack of talent in fire magic, returns to Japan with a changed name and tremendous skill in wind magic. Killings at the Kannagi house by a powerful wind user lead his former family to believe Kazuma is taking revenge for his exile. Although he claims to be innocent, Kazuma prepares for an all out war with the Kannagi family.

Kazuma, Ayano and Ren encounter Lapis, who begins the summoning ritual of Belial, the King of Demons. Lapis reveals she is attempting to become "human" through others' pain. Kazuma and Ayano attack Lapis, who retreats as Belial's summoning proceeds. By combining their powers, Kazuma, Ayano, and Ren manage to repel Belial. Afterwards, Bernhardt and Lapis return, but Gemna's arrival convinces Bernhardt not to kill them. Kazuma asks Lapis what were the final thoughts of Tsui-Ling, who reveals that Tsui-Ling wanted Kazuma to die. At the Kannagi residence, Kazuma reveals he has accepted his past and will concentrate on the future, which incenses Ayano, who claims that Kazuma should rely on her. Kazuma agrees, but gives Ayano a tap in the rear to show his acceptance to the new partnership, resulting in Ayano angrily chasing him around the courtyard as the members of the Kannagi family, Ren's and Ayano's friends, and Tachibana look on amused how close the two are.