Ep. 12: Yoshika y las brujas destruyen el núcleo de los Neuroi y liberan a Mio de la cúpula

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Over Minna's objection, Mio heads inside the Yamato and gives the Neuroi Dynamo her remaining magic power which kick-starts the engine. Mio is then able to fire the main cannon, destroying the Neuroi nest. It is revealed, however, that the dome was merely a shield concealing the hive's massive core, which Mio becomes absorbed into. Refusing to surrender, Yoshika, with backup from the other Witches, retrieves the Reppumaru and is able to perform the True Reppuzan which only Fuso Witches are capable of performing. This destroys the giant Neuroi core at the cost of Yoshika's remaining magical power, releasing Mio in the process. With Venezia finally free from the Neuroi, the 501st Strike Witches once again go their separate ways, and Yoshika begins her medical career. In the final scene, a stranger appears to discover Yoshika's special Striker Unit, having washed up on a beach alongside the Reppumaru. (Source: Wikipedia)