Ningyokan Monogatari

MIyako's mother remarries and leaves on her honeymoon. She tells Miyako that she is moving in to Mermaid Mansion to live with her step-brothers Dai, Kyo & Akira. While on her way to her new home she hears the neighborhood gossip that the Mansion is haunted. Thus begins Miyako's supernatural adventures with her new step-brothers.