A 17-year-old student, the protagonist of the game. She has a strong sixth sense, which runs in her family, that allows her to see things others cannot. Because of this ability, she finds it difficult to open up frankly to her friends; the only person she can open her heart to his her older brother, Mafuyu, who possesses the same ability as she does. One day, her brother goes missing. Going by the note he left, she heads to Himuro Mansion.
A 42-year-old mystery novelist. He helped Mafuyu out in many respects with regards to work after he lost his mother. He goes to Himuro Mansion with Ogata and Hirasaka to conduct research for his next work. His whereabouts are currently unknown.
Takamine's assistant, 28 years old. She has a sixth sense not at quite the level of Miku's, and had quite a bad feeling about the research at Himuro Mansion. Eventually, she went with Takamine and Ogata, and did indeed go missing.
A 32-year-old magazine editor. He was the one who informed Takamine of the rituals of Himuro Mansion, and went along with him. "Leaving for research" was the last contact he made with the editing department, before all contact broke off.