Umineko: When They Cry - Season 1 Episode 20 Zugzwang

Ange briefly withdraws from Beatrice's game to confront Maria over her denial of being neglected by Rosa, but Maria tells her that she is content with Sakutaro ensuring her mother's love. Beatrice decides to show Ange how she, upon noticing how Maria created a soul for Sakutaro, gave a human body to Sakutaro and named Maria the Witch of Origins, joining forces with her in a witch's alliance called Mariage Sorcière. Ange recounts how she too was once a member of this alliance and learned how to summon the seven Sisters of Purgatory, becoming close friends with Mammon in the process. By the year 1998, however, she loses the ability to use magic, and continues her investigation of the Rokkenjima murders. Before she returns to the game, Ange is confronted by Lambdadelta, who tells her that if Battler defeats Beatrice, he will return to her past self in 1986 while her current self will remain alone, and proposes that Ange can remain with her brother if he continues to fight against Beatrice for eternity.