It is a bit ambiguous in this case.
The anime finished before the manga:
Anime finished: September 21, 2007
Manga finished: March 06, 2008
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Kaze no Stigma tells the story of Kazuma Yagami, a wind magic user who was exiled from his family after being unable to use fire magic and losing a crucial duel.
Years later, he returns, only to find himself suspected of murdering members of his own clan, the Kannagi family.
To clear his name and uncover the real killer, Kazuma must reluctantly work with the very family that rejected him, including the fiery Ayano Kannagi, despite their deep-seated animosity.
He faces suspicion, danger, and the challenge of cooperating with those he despises while navigating the mystery surrounding the Kannagi murders.