エンジェル and demons aside, the ハート, 心 of the story is of Sam and Dean, two brothers fighting side によって side. No matter what they go through, in the end their 愛 for each other is stronger and it will always win.
Video clips from スーパーナチュラル to the song 'I'm Not Wearing Underwear Today'- this may annoy some ファン but I thought it was just too hilarious not to put up.