>>52482307It's a three part love story
First song is about a girl promising to wait for her lover who is rolling away, telling him to keep moving and never give up
The second is about the two of them saying goodbye and growing apart, eventually leaving each other because despite their love they've grown apart
Then the third is a remix of the first one changed to be them coming together again with their love stronger than ever and rolling together
Also there's the depressing story about idols in regards to the backstory of the first song being made 