"Karin" is the Japanese name for the Chinese or Japanese quince, which is a deciduous tree that belongs to the rose family. It is native to China, but was introduced to Japan centuries ago. It has pink or white flowers that bloom in spring, along with green leaves that turn yellow or red in autumn. The fruit is large, yellow, and pear-shaped, with a strong fragrance and a sour taste. The fruit cannot be eaten raw, but can be used to make liqueur, tea, or honey-preserved slices. The Japanese quince is often planted as an ornamental tree in gardens or parks, where it attracts birds and insects with its colorful flowers and fruit.