Kobato

Kobato is a sweet and perky girl, but also extremely naive about the world around her, since she literally fell out of the sky, and thus unaccustomed to the human world. She is on a mission to fill a mysterious flask withheart fragments gained by healing broken hearts. Once filled, her wish to visit a certain place will be granted. However, she must not fall in love with a particular boy she works with and whose heart she must heal