I know that songs like Planetarium and Daisuki Da Yo have earned the reputation as being "sad' songs, per se. But if you look into this song, it's pretty sad as well. When you look at the first stanza, she sings about the morning she is having. She then says, "Standing strong despite the blowing wind"...after which she goes back to a time and place in her memory when she was with someone she loved. She seems to reminisce a lot, which (to me) seems like she is mourning the loss of a friend. "Your warmth that I feel when we embrace, I can't forget even till now." It's a beautiful song with some amazing lyrics. It's made it to my top ten list...hehe.