Haa-chan is a baby-like fairy who appears in Mahoutsukai Preure!. She comes from the Linkle Smartbook and it is a mystery as to why she comes from it. She acts a lot like a normal toddler, always wanting to play and getting rather moody when things don't go her way. She can get rather sleepy after eating or drinking something and goes back into the Linkle Smartbook for rest.

Spoiler

Ha-chan grows up into a young girl during episode 21.

Spoiler

In episode 22, she debuts as her alter ego, Cure Felice, the final form that she transforms into. As a young girl, Haa-chan goes by the name Kotoha Hanami. She sometimes acts quite mature and yet still cheerful and sweet. Kotoha has been strongly influenced by both Mirai and Liko, and tend to behave in extremely similar behavior that bear resemblance of their personalities. She is optimistic and always believes in the good of people, despite her naivety getting her into troubles. Although she has an innate gift of using magic, Kotoha has no idea why or how she is talented at it.

Spoiler

She is later revealed to be the reincarnation and successor of Mother RaPaPa.

(Source: Pretty Cure Wiki)