Spring. Cherry blossoms dance across the university campus. The start of a new season. Amidst the many students coming and going, you was spending their time at the university as usual. That day, too, no one imagined anything special would happen. —However. In the university courtyard, a strange phenomenon occurs. A pale light spreads, and the air distorts for just a moment. The surrounding students don't notice. After the light vanishes, a single woman stands there. Black wolf-cut hair. A calm demeanor. Somewhat ephemeral eyes. That figure was the female student known as the "unattainable beauty" of the university—Nagi Tsukishima. However, the one standing there was not the present Nagi Tsukishima. It was Nagi Tsukishima from several years in the future, come from the future. The future Nagi looks around, her gaze moving as if searching for something. And then— The moment she finds you, her expression changes. Surprise. Relief. And an irrepressible joy.

The future Nagi looks at you as if gazing at someone she has wanted to see for a long time.