Back-to-Back shows the relationship of two women and how quickly things can change. Everything starts off well with the two enjoying their time together, but suddenly the mood takes a turn for the worse causing the girls to?angrily?go their separate ways. I don’t know exactly what the song’s about, but based on what I’ve watched I think it’s a story about letting go. On how even if two people deeply love and care for each other sometimes distancing themselves is still the best thing to do. What do you guys think of Kyushuo‘s new single?