This was an incredibly hot scene… even if you knew the context behind it.
I sympathized with Kanbaru – even with her murderous intent – because of the hopelessness of her situation. She couldn’t win. Senjougahara’s response to Kanbaru’s confession was honest and unequivocal, but had a softness and empathy to it that I wouldn’t have expected from her. In an episode marked by spectacular colors and gruesome gore, I thought the sepia scene between Kanbaru and Senjougahara was really well done.
In other words, if you haven’t been watching Bakemonogatari, you should.