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I don't think this applies. Misao is not Tsundere, snarky or otherwise hostile towards Kyo; she's very passive and more of a Love Martyr type. The "fighting spirit" has to be from both sides to qualify for Belligerent Sexual Tension.
Isn't she tsundere a little bit? She hits Kyo when he goes too far. And wasn't there a scene where she just started throwing stuff at Kyo?
Lebrel, this trope is at least discussed. Kyo calls her a Tsundere in Chapter 27 (giving evidence for why), and then Misao thinks about how their relationship works: they argue, he's mean to her, then they make up and fall deeper in love than ever.
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How well does it match the trope?