this also played when Chihaya and Taichi went to Fukui to see Arata, they got kicked out, and this started when Arata read the letter that Chihaya wrote. I didn't remember this, i was just looking for a 'Sad Chihaya crying inside the closet after losing her match to former Queen Yumin' video and I found it.
+melsa3 that bit was so sad...... I had almost forgotten that part since i started Chihayafuru maybe almost a week ago, and finished season 2 today. The strange thing is that the first time I saw that part I was sad, but not crying. But when I watched it just now when I read your comment (I looked at an episode list to find it), I started crying silently.