Aika and Yūki were inseparable childhood friends, navigating life's ups and downs together. But when Yūki's talent for volleyball lead him into the national spotlight as Japan's rising star, their once unbreakable bond is put to the test. As Yūki's star continues to rise, will the changes in their lives and the demands of his newfound fame drive a wedge between the longtime friends? Or will the strength of their lifelong connection be enough to keep them side-by-side through it all?