After assisting a lonely classmate, Akira Akamori, a high school student preparing for a transfer, encounters Aoi Sotome, a blonde girl caught in the rain at a park. Hearing her plight of homelessness, he offers her shelter until his school switch. As they navigate their new living arrangement, Akira and Aoi gradually bond, their relationship mirroring a recurring melody of meeting and separation in this poignant love tale.