Six decades ago, a young lady was abandoned to perish within the deserted school edifice adjacent to the prestigious Seikyou Academy. The circumstances remain shrouded in mystery, perpetuating the chilling saga and spectral lore that endure through time. Amid Seikyou's array of extracurricular clubs thrives a group dedicated to delving into the paranormal, a fitting pursuit given the school's eerie past. What sets nerves on edge, however, is the club's originator - the very ghost haunting the premises. Yuuko, stranded between life and death with no recollection of her demise, forms an ethereal bond with Teiichi Niiya, a perceptive freshman who alone can perceive her presence. Together with their unwitting fellow club members, they embark on unraveling the sinister enigmas enshrouding Seikyou. Will unearthing the truth behind Yuuko's tragic end offer her liberation, or will her newfound connection with a mortal yield unforeseen consequences for both their fates?