On the island of Rokkenjima, Shannon is a mere servant to the eccentric head of the Ushiromiya family, Kinzou. But Shannon has feelings for George, her master's grandson, although she is quite aware that a relationship between them would never be allowed. Try as she might, Shannon's affections for George grow stronger with each passing day, despite her attempts to deny it. One night, the Millennial Witch of Rokkenjima, Beatrice, takes pity on her: she will use her magic to help George and Shannon realize their love, if Shannon breaks a ritual mirror nearby that is dampening her powers. Eventually, Shannon relents, and to her surprise, her relationship with George begins to blossom. Kanon, another servant, believes that Shannon is being tricked by the witch. As "furniture," Kanon believes they have no right to even consider themselves human, let alone feel emotions like love. However, he soon discovers that one among the family has affection for him: Jessica, Kinzou's granddaughter, and eventually he starts to consider his own feelings toward her. But both Kanon and Shannon's love will be put to the test when the rest of the Ushiromiya family arrives for the annual family conference, and Beatrice enacts a competition for them to find Kinzou's hidden gold. Whoever finds the precious ingots will gain the coveted position of family head, and everyone has their eyes on the prize. But what starts off as a bizarre game soon turns into pure terror, and some of them may not make it out alive. Will the two servants be able to protect the ones they love? [Written by MAL Rewrite]

Following the 1986 Rokkenjima Mass Murder Incident, Ange Ushiromiya is the last surviving member of her family. Bearing immense guilt for being unable to accompany her parents and older brother Battler to the island, Ange has been desperate to know the truth behind the grim events. However, 12 years later, further hardships torment the grieving girl—isolating her from the world she once loved. On the brink of giving up, Ange is visited by Frederica Bernkastel, the Witch of Miracles. As a spectator of Beatrice's games, Bernkastel offers Ange a chance to not only learn what occurred on Rokkenjima, but also exact revenge on the person who murdered her family. Despite the possibility that her wish will go unfulfilled, Ange accepts the deal and inherits the name of the Golden Witch, allowing her to travel back in time to assist Battler. This new, spirited alliance provides Battler the conviction to fervently proceed in his uphill battle as the game board continues to transform in unexpected ways. [Written by MAL Rewrite]

In the aftermath of their climactic duel, Battler Ushiromiya is left to ponder the abrupt resignation of the Golden Witch Beatrice, who is now a husk of her former self. Beatrice's drastic departure from her defiant motives urges him to question every circumstance in the previous four games. Despite wanting to stay by her side, Battler resolves to regain control of the current situation, where Lambdadelta and Frederica Bernkastel have temporarily taken their places to play the fifth game board. With the passing of Kinzou Ushiromiya, Krauss Ushiromiya succeeds the family headship amid deep financial troubles. Due to poor investment choices, the family inheritance is set to fall into the hands of Krauss' benefactors, allowing his siblings to easily take legal action against him. In order to assist her husband, Natsuhi Ushiromiya enlists Beatrice's help to revive the former head—hoping to conceal the truth until the debts are paid. Enter Erika Furudo: a self-proclaimed detective who washes up on the island of Rokkenjima at the start of the family's annual conference. Welcomed as an honored guest, Erika quickly takes an interest in the ongoing discussion about the riddle of the epitaph. The pompous girl's tenacious investigation into finding the hidden gold, however, sparks a chain of events that threatens to collapse the order of the Ushiromiya family. [Written by MAL Rewrite]

Battler assumes control of the sixth game, wielding his new golden truth as he parries the logical blows of the detective-and-witch, Erika Furudo. For Battler, what began as a contest over the existence of magic has become a fight to revive the fiery, vibrant Beatrice of his early clashes on the game board. The logical loops and rules of the game were already complex, but now as the game master, Battler must quickly learn how to shape the events to his and Beatrice's ultimate ends without getting locked in a closed room by Erika, the Witch of Truth! (Source: Yen Press)

Umineko no naku koro ni (うみねこのなく頃に, litt. « Quand les goélands pleurent ») stylisé en うみねこのなく頃に, est une série de dōjin de type sound novel publiée par le cercle 07th Expansion de manière épisodique. Le premier jeu de la série, Legend of the Golden Witch, a été publié au Comiket 72 le 17 août 2007 sur PC et toutes les copies disponibles se sont vendues en 30 minutes. La série a été adaptée en manga, romans, Drama CD ainsi qu'en anime. Cependant, l'anime ne couvre pas l'ensemble du scénario et comporte des « erreurs scénaristiques ». Le spectateur n'aboutit donc pas à la résolution de l'énigme à la fin de l'anime.