Umineko When They Cry Episode 1: Legend of the Golden Witch

Beatrice is dead, her soul shattered by Battler at her own request. Though her body sits across the chessboard, she is no more than a husk of the laughing, impulsive witch she once was. Lambdadelta is more than happy to preside over the fifth game, and Bernkastel willingly steps in for Battler as he takes his leave to collect his thoughts. But two witches can cause all manner of mischief when left to their own devices, especially when they care as little for rules as Lambdadelta...

As the storm outside darkens, the truth of Natsuhi's past comes to light--the barrenness that prevented her from producing an heir and thus earning the respect of her father-in-law and recognition as an Ushiromiya. But the infant heir who was thought to have died eighteen years ago has apparently returned to torment Natsuhi, toying with her and forcing her to play into a grander scheme of murder. For, even though Battler has solved the riddle of the epitaph, the sacrifices have already been chosen...

One by one, the attendants of the Ushiromiya family gathering are killed under what can only be described as supernatural circumstances. Even Kyrie, the strongest proponent of logic and reason, is convinced by the vicious parade of witches and demons she has witnessed. Battler and Maria have yet to be tested for their suitability as family head, but the greater test for Battler will be whether or not his logical stance can hold out against the seemingly undeniable tide of the witch's magic...