Erza Scarlett (Fairy Taill) vs Senji Muramasa (Fate)
Pre-series she played a perfect game of pool with bullet ricochets, and in case you're wondering, that is a superhuman magic gunslinger. She would shut Billy down, only his NP is any threat and even then, she could take it, especially if she had any kind of defensive armor. That's before-series...
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