Bakamono (2010)

10 years ago, Hide, a college student, meets Gakuko Yuki, an older woman, through work. They become lovers with Hide falling hard for Gakuko Yuki. The following year, Yuki abruptly announces one day that she is going to marry another man. This devastates Hide. Hide eventually finishes college and finds a job, but his yearning for Yuki leads him into depression and alcoholism.
Meanwhile, Yuki is involved in a car accident andsuffers a life-altering injury. Now, 10 years later the two former lovers come across each other once again. They are both shells of their former selves…