When a young woman stumbles upon an ancient shrine rumored to hold dark secrets, she inadvertently releases a malevolent entity, only to discover that the true horror lies within her own past and the treacherous bonds of family....

This story delves into the complex world of Tsumamigui, following Detective Kaito, who must navigate a web of lies and deceit to uncover the truth behind a mysterious disappearance....

Unravel the mysterious origins of the Tsumamigui's Echo in this prequel short story, where a young engineer's discovery in deep space leads to a chilling revelation about humanity's fate....