She is a fairy from the Mirror World who bestows Mai with the bracelet "Heart Bracelet" that allows her to transform into Magical Emi.

Kozuki Mai is an elementary student who wants to be a magician and perform in her family's "Magicarat" magical act. However, she is too young, and her magic skills are not very good. Then one day, she encounters a ball of light that was put into a stuffed doll of flying squirrel, bringing it to life and somehow giving her the power to turn in to the 18 year-old magician "Magical Emi." As Emi, Mai was able to join the magic act. But she must keep her identity a secret from her family and from her crush. 

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An OVA that both summarizes and continues the Mahou no Star Magical Emi TV series.

Kozuki Mai is an elementary student who wants to be a magician and perform in her family's "Magicarat" magical act. However, she is too young, and her magic skills are not very good. Then one day, she encounters a ball of light that was put into a stuffed doll of flying squirrel, bringing it to life and somehow giving her the power to turn in to the 18 year-old magician "Magical Emi." As Emi, Mai was able to join the magic act. But she must keep her identity a secret from her family and from her crush. 
Includes the One-Shot "Kokoro no Tobira" 
Includes the One-Shot "Kumori Nochi Tokidoki Hare" 
Includes the One-Shot "Takanki Mitai!" 
Includes the One-Shot "Akai Kutsushita ga Suki!"

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