The story begins with Reika Kitami, twelve years before she becomes the woman she is today, as a transfer student at a university. Despite being intelligent and studious, she struggles to fit in and make friends. However, her life takes a turn when she is introduced to a group of students who invite her to join them in a series of supernatural rituals.

As Reika becomes more involved in the rituals, she finds herself drawn to the dark and mysterious world of the supernatural. She discovers hidden powers and abilities within her that she never knew she had. Alongside her newfound friends, she delves deeper into the world of the occult, encountering dangers and facing challenges along the way. However, as Reika continues to uncover the secrets of the rituals, she finds herself caught in a web of intrigue and betrayal, as the true nature of the group's intentions are revealed.