Kaki (persimmon) is very common fruits in Japan. We can see the trees everywhere in Japan, even in Tokyo. It is one of the symbolic things of autumn.
Kaki is a healthy fruits, and there is a similar proverb to "An apple a day keeps the doctor away". "Kaki ga akaku naruto isha ga aokunaru." It means "When kaki turns red, the doctor feels blue". A kaki, not an apple keeps the doctor away in Japan. The fruits is different, but the idea is similar both in the west and the east of the world. I think it is interesting!
