Hatachi no koibito.

Hatachi no Koibito tells the story of Inoue Keisuke, a married salaryman. At the age of 50, he begins thinking about his purpose in life. By chance, he encounters Sawada Yuri, a 20-year-old graphic design student full of hopes and dreams for the future. Because of her resemblance to his girlfriend from long ago, he finds his heart unexpectedly beating faster... --Tokyograph