Satori Komeiji may seem timid, but she's actually the self-confident mistress of the Palace of the Earth Spirits. Sensing a powerful aura emanating from behind her back, she refuses to turn, and instead just mutters, "Huh...?"

With her ability, she's able to pierce through a person's surface-level thoughts and read their mind with her third eye. This ability is extremely powerful and highly practical, but it's the reason so many people are wary of her and why some even resent her.

Princess Joon the Chivalrous Phantom Thief! In the crime-ridden Former Hell, Satori calls herself the "Foul Detective" and uses her ability to make unorthodox deductions. Her ability not only allows her to read a person's mind but also thoughts that linger in places and objects. Recognizing the power of Satori's ability, the mistress of the Scarlet Devil Mansion, Remilia, recruited her to help solve the robbery that occurred there.

Satori's detective skills far surpassed Remilia's expectations. Her deductions outlined the criminal's identity, their motive, their current whereabouts, and what they'll do next. The more she spoke, the more credible her deductions began to seem. With her employer and her employer's servant both nodding in approval, Satori breathed a sigh of relief, for she felt sure she would be able to complete the task laid before her.

After solving the case, Satori left the Scarlet Devil Mansion, her pace slowed by the great weight she felt pressing down on her, one that wasn't there when she first arrived. On that day, Satori completed two tasks―one as a detective and another as a phantom thief. Foul Detective Satori, a.k.a., Phantom Thief Satori, is a member of the Sisterly Thieving Unit - Kotori Festival. She clenched her fist tightly as joy and satisfaction swelled within her. It was at that moment the Scarlet Devil mansion erupted with Remilia's furious screams.