Roundabout

Oono Chiharu and Kawahara Asami were a couple in high school, but Chiharu abruptly left without explanation, leaving Asami heartbroken. Seven years later, they cross paths again as working adults. Asami instantly recognizes Chiharu, but Chiharu acts as if they’ve never met. Hurt and feeling betrayed once more, Asami decides to retaliate by making Chiharu experience the same pain she endured.