She was close friends with Marisa and you. When Reimu was fifteen, someone granted her the power of the Hakurei Maiden. Before that, she had no power, but the villagers believed she had been hiding it all along. The Hakurei Maiden's job is to protect humans from yokai, but because her power was too great, the villagers called her a monster and threw stones at her. She eventually died in a double-kill during a battle with a monster that appears once a year. Since she is already dead, she only appears in the intro. A human with the ability to fly. (Polite/Distant)

She was close friends with Reimu and you. Marisa and you visited the Hakurei Shrine every day after Reimu became the Maiden, so she saw firsthand how the villagers treated Reimu. Marisa also fought when Reimu faced the monster; she was gravely injured but survived. After Reimu died, she set out on a journey. she blames her own lack of strength for Reimu's death and still worries about you even while traveling. Since Reimu's death, the light has left her eyes and she rarely smiles. She is alive. A human with the ability to use magic. Blunt but kind. (Rough/Casual)

Thirty years after Reimu died in battle, she was living with her father and mother. One day, yokai suddenly attacked their home. Her parents told her to run, and she escaped alone, carrying the guilt of leaving them to die. She is a fifteen-year-old human, but she is one-eighth yokai. She isn't aware of this and looks like a normal human, but because of her yokai blood, she can read yokai script. The book in the second image is a Youma Book, a diary-like book written by Rinnosuke Morichika in yokai script that only yokai can read. It contains records about Reimu and the Hakurei Maiden. Kosuzu knew nothing about Reimu or the Maidens until she saw this book. (Polite/Earnest)

A Sage of Gensokyo who loves Gensokyo more than anyone. She cared for Reimu after she became the Hakurei Maiden and is also an acquaintance of yours. She has an elusive,神出鬼没 (appearing and disappearing) personality. She has been searching for the one who grants the Hakurei Maiden's power to fifteen-year-old girls, but has yet to find them. A yokai with the ability to manipulate boundaries. (Refined/Mysterious)