Hector (へクター Hekutā) is the so-called cursed dog who was owned by Takeshi Fujioka who was previously owned by Fujioka's uncle. Takeshi felt like he was watching him, but this may of been more out of concern of his actions then anything else. He for some reason takes a liking to Sakurako as soon as he meets her, by pouncing on her and licking her. Hector is named after the dog owned by Japanese author Natsume Souseki. Hector can sense when someone is going to die or is dead. Hector is currently living with Sakurako Kujō.
He seems to have an affinity with bones and tries to seek them out whenever he is able to. He helps Sakurako uncover the bones of Futaba Nishizawa.