Pickrun

Pickrun are key-shaped fairies in Fresh Precure! that allow the Cures to transform. There are four of them, each a different color.

Pirun
The pink Pickrun who lets Love transform into Cure Peach. The name Pirun comes from pink.

Burun
The blue Pickrun who lets Miki transform into Cure Berry. The name Burun comes from "buruu" which in turn comes from blue.

Kirun
The yellow Pickrun who lets Inori transform into Cure Pine. The name Kirun comes from ki/kiiro, the Japanese word for yellow.

Akarun
The red Pickrun who eventually lets Setsuna transform into Cure Passion, though was unable to for awhile due to the darkness that had surrounded her. The name Akarun comes from aka/akai, the Japanese word for red.