Even though his behavior is inexcusable, I can understand how he feels. It must be very frustrating to practice so hard and put so much effort into something only to be second to a person who doesn't seem to care.
Kang Mae's behavior is interesting; it's very similiar to that of Beethoven's. Beethoven never accepted work that was less than perfect, and I believe there was this one time he actually restarted a performance that he wasn't pleased with.
haha, he's taking it out on young Gunwoo cuz the young guy reminds him of his enemy. that's pathetic. what's wrong w/ being second? at least no one's stopping him from playing his piano. i like how Rumi snaps she's so funny.