Kanon Tsumugi is 31 years old and has been without a boyfriend for 9 years since she was dumped as a university student. People around her say that she is good at her job but works too much, and that she does not seem to be interested in love. Then one day, at a blind date she was forced to attend by her sister, she meets Haruomi Inoguchi, the younger brother of her ex-boyfriend. Kaon is bewildered by Haruomi, who is seven years younger than her, but Haruomi has a past that she cannot forget. What will happen to their love, where their feelings intersect?