Sumire, a second-time “reincarnator,” spent her days searching for the “target” to repay a debt of gratitude from her past life. One day, her childhood friend Karasuba introduces her to Kohaku, a young man who just arrived in town. Sumire feels Kohaku is her “target” and strongly desires to make him happy, but a great secret lies between them...? A story of a simple-hearted reincarnated soul and a former time traveler spending their final days together, walking a life filled with trivial joys.