After her mother’s death, junior high student Yoshiyama Kazuko lives in Yokohama with her father and little sister. One summer night, while stargazing with her childhood friend Goro and little sister Non-chan, they meet Kazuo, a mysterious young man in uniform who seems oddly familiar. After inhaling a lavender-scented mixture in a lab accident, Kazuko gains psychic powers, enabling her to time leap. Her strange experiences lead her closer to a shocking truth—Kazuo is a time traveller from the 2...