One evening, while practicing swimming, Sara Kimura’s rival—Summer—suddenly vanishes right before her eyes. Soon after, Sara becomes the target of slander and suspicion, accused of being involved in Summer’s disappearance. Just as she’s struggling, Ethan—the eccentric president of the Paranormal Research Club "Rumor"—approaches her, claiming he knows how to find Summer and uncover the truth. He tells her that Summer has crossed into another world. At first, Sara doesn’t take him seriously—but eventually, she decides to place her trust in him. Just then, a mysterious woman begins watching their every move... A suspenseful story unfolds as the brilliant and famously odd Ethan from the engineering department teams up with Sara, who possesses a unique ability. Alongside the members of Rumor, they face a terrifying conspiracy. Can they really find Summer and uncover the secrets of this other world?!
