第 25 集: Dünste 揭露 Edel 的撤退與 Spiegel 的本質，隨後 Fern 揭露 Frieren 的魔力偵測缺陷。

Dünste informs Denken's and Frieren's parties that Edel has retreated from the dungeon and that mind control is not an option against the replicas. Lawine and Kanne arrive at the scene and tell the parties that the monster they are facing is a Spiegel and that the replicas it creates have no unique weaknesses. Everyone present concludes that Frieren's replica must be defeated before they can destroy the Spiegel. Before heading into battle, Fern discloses Frieren's fatal weakness: she cannot detect mana when she casts a spell, a vulnerability typically found in beginner mages. After the discussion, Fern and Frieren are chosen to confront Frieren's replica. Everyone else remains in place to protect them from potential attacks by other replicas. Frieren and her replica are evenly matched, and Fern waits for an opening to hit the replica with Zoltrakk. In a flashback, Frieren hands Serie a will from Flamme. The will reveals that Flamme convinced the human emperor to allow humans to adopt magic. Serie remarks that this is the start of the era of humans, and eventually human mages will be able to surpass even Elves like herself and Frieren. In the present, Fern strikes Frieren's replica directly with a full-power Zoltrakk. (Source: Wikipedia)

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