Sayonara Color (2005)

Shohei (Naoto Takenaka) works as a doctor in a sea-side hospital. One day a new patient is admitted to the hospital with ovarian cancer. Shohei is surprised to recognize Michiko (Tomoyo Harada}, his first love from high school. Shohei has been leading a dissolute bachelor life, paying for the company of high school girls and dating an older woman who works in a local bar, but in reality for the last twenty years he has not forgotten Michiko. Unfortunately, though Michiko doesn't remember him at all.