The thing with the pianist though is that after he continues running, he looks happier than before. A few scenes later, at 1:43 and 2:01, he looks hysterically happy. Being hit by Cupid's arrow would explain this better than having abdominal pain.
I agree with you on leaving the video up and discussing it there. This is already going on.
Thanks for all your help on this.
I probably would have never figured out アゲる季節 if you didn't tell me because I asked about it in other places and they didn't know. I even had to explain it to another Japanese person.