Akame ga Kill!

Akame ga Kill! (1x24)

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With the Empire all but defeated, Esdeath still refuses to surrender and challenges Akame to a duel. With all of her attacks deflected, Akame is forced to unleash her Imperial Arm's trump-card by poisoning her own body with it, increasing her abilities and making a comeback to the point of wounding Esdeath's left arm. As a result, Esdeath cuts it off to prevent the poison from spreading through her body. With no time left to act, Akame puts all of her efforts into one final strike, forcing Esdeath to use her own Imperial Arm's trump-card to freeze time, which fails to prevent Akame from dealing her a fatal blow.