The three of them were spending their days lazily yet charmingly. However, with the arrival of a transfer student, their high school life changes dramatically. They can no longer avoid confronting the feelings and traumas they have hidden in their hearts, and the relationship among the four begins to change. While feeling flustered by these changes, the girls still enjoy their youth. We are so lonely that we can't do anything about it. When facing something, we are ultimately alone. Yet, if there is something we can do, it is surely—whispering that I am on your side.