Short
If you use an arrow to shoot a stalk of beans, the bean plant will end up short. When the beans are hit with that arrow, it severs the plant in two, and you are left with a stalk of beans that is much shorter than before.
たん
みじか
None
All this shooting of arrows to make the bean plants short is taking a long time. Since you're out in the sun, you're starting to get a tan (たん). After the day is finally over, your tan is really, really dark.