Jaeberry
The Jaeberry aka JessicaBerry, first discovered in Hong Kong, is a Asian fruit that has this specific happy face that slowly grows into a : D when ripe. They have been planted across the globe to many countries, but Jessicaberries are extremely well grown in S.Korea, as the they seem to be highly reactive to the presence of Lee Taemin.

The Jaeberry is very sweet and delicious, but it's hard to eat due to it's: NNNUUUU! D: screams of despair.
The amazing taste of the Jaeberry makes me think of rainbows and unicorns :D