Growing up enamored with making traditional Japanese sweets alongside her mother, Nao Okura's life takes a dramatic turn when tragedy befalls her family. As her mother faces wrongful accusations and imprisonment, Nao's once bright childhood memories with Tsubaki Takatsuki, the heir of a renowned wagashi shop, become clouded. Fast forward fifteen years, Nao, now known as Nao Hanaoka, finds herself back at Kogetsuan, where Tsubaki, once a beacon of light, has transformed into a harsh and unrecognizable figure. Despite the stark differences, Tsubaki proposes marriage to Nao, hoping her skills can revive Kogetsuan's fortunes. With a hidden agenda to uncover the truth from the past, Nao accepts, embarking on a marriage that holds the potential for unexpected developments. Can their arrangement evolve into a genuine bond amidst the shadows of the past?