In the midst of a mysterious night that stretches for a year, a regular college student diligently pursues his crush, a girl with ebony locks, whom he admires deeply. Employing a simple yet calculated strategy of orchestrated encounters, he aims to spark meaningful connections. Despite his persistent efforts, their bond remains stagnant. Conversely, the black-haired girl entrusts her life to destiny, viewing every experience as a piece of a grand design. During a stroll through Kyoto's vibrant avenues, she stumbles upon a childhood memento—a book that marked the genesis of her destined voyage—now up for grabs in a used bookstore. Learning of this, the college student seizes an opportunity to serendipitously reunite with her: this time, his goal is to secure the book first, hoping to seize the thread of fate that might intertwine their hearts.