This is Toshiyuki Kuroki and Yasuko Kuroki. They are dairy farmers from Miyazaki Prefecture in Japan and have been married for 60 years.
After 30 years of marriage, Mrs Kuroki suddenly lost her sight after developing complications relating to diabetes. According to RocketNews24 it was devastating for the couple, who had risen early every morning to tend to their cows while bringing up three children – they had planned to go on a trip around the country in their retirement.
Depressed, Mrs Kuroki sealed herself away from the world. Her husband wanted to give her something she could enjoy, and he found the answer after he saw people admiring their pink shibazakura flower. He thought that if he planted more, people would come over to their house to keep his wife company. Moreover, the flower has a sweet scent that she could enjoy.