She is an expert swordswoman. Although not on the level of Murakami, Border's number 4 Attacker, and Yūma in this regard, she managed to face them in a three-way fight, and proved a difficult opponent to defeat even in a duel. Her basic style consists in wielding Kogetsu with two hands and generating a Shield when needed. However, she was able to cover for the loss of an arm by using Meteora. Although it was her first time using a shooting Trigger, she managed to keep up with her opponent for a while just by visualizing how Nasu fights.
|Yūko Kumagai's Triggers|
|Yūko is highly proficient at using Kogetsu. She wields it with both hands, but she can handle it with only one, although her bladework becomes slower. Her counterattacks have earned her the respect of many a fellow Attacker. She was able to hold her own in a three-way fight against the aces of Tamakoma Second and Suzunari First, top-class Attackers both. Her Kogetsu is slightly customized, as it has a cross-shaped tsuba (guard). She first uses it in chapter 96 (episode 44 in the anime).|
|Border's default Defense Trigger, it is part of her usual fighting style, which consists in wielding Kogetsu with two hands and activating Shield when needed. She was first seen using it in chapter 99 (episode 45 in the anime).|
|Kumagai originally got Meteora to use in the match against Tamakoma Second and Suzunari First in order to demolish the bridge. Despite being her very first time using it, her skill was such that she managed to hold her own against Murakami, earning the praise of the commentators. According to herself, imagining Nasu's fighting style helps her move better. Further proof of her skills is her placing a Meteor bullet under the hilt of Murakami's Raygust, although he noticed it in time. She first uses it in chapter 99 (episode 45 in the anime).|
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