35-year-old Sayaka has lived with her husband Kazuma for a decade. She wants a child, but Kazuma has refused—in no small part because he’s cheating on her with her friend Rui! Even as a chance encounter with an old flame reignites her own heart, Sayaka still has deep feelings for her husband … but when she witnesses Kazuma’s infidelity for herself (and Rui changes her spots around her for good), how will a newly humiliated Sayaka respond?!