After being dumped by her boyfriend Yosuke, Ayano falls into despair and contemplates suicide. Reading an essay, she decides against it and slowly begins to recover. One night, while drinking alone at an izakaya, she meets a man named Hideki and spends the night with him. As she starts to fall for him, she discovers he is married, shattering her heart once again. Having endured two painful breakups, Ayano heads to the famous suicide spot, the Koyo Valley Suspension Bridge. There, she encounters Yosuke—the man who once rejected her.