Harutora's childhood friend who goes to a different school in the same prefecture. She is really well-informed of the Onmyoji and their responsibilities and has high expectations of Harutora and often lectures him to try becoming an Onmyoji. She even goes to the extent of writing an ema (Shinto wooden wishing plaque) to make Harutora an Onmyoji.
She had romantic feelings for Harutora and got really jealous when Harutora was kissed by Suzuka. During his next encounter with Suzuka, she sacrifices herself to save Harutora from Suzuka's familiar Tsuchigumo, when it was revealed that she was actually a shikigami. Her death prompted Harutora to become Natsume's familiar.
Hokuto met Harutora on the first day of summer in middle school. He saw her in a park. After sometime, he had decided to chase her. Until she introduced herself on the last day of that summer. Since then, the two of them have been friends.
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- The type of familiar that Hokuto was an "operation type", this means that the controller, Natsume, was using Hokuto as a bridge to communicate with Harutora.
- One of Hokuto's most significant moments is when she keeps the ribbon of the prize Harutora wins for her during the fair, which later hints at her being Natsume's shikigami, as Natsume has the same ribbon.
- Her shikigami design was based off on a idol that Harutora liked.