* Based on a series of English language study aid books published by SansaiBooks in Japan.
[Najihara Ink] is a clumsy high school girl with the appearance of a grade school kid. She is one of the top students in the school, and her best subject is English. Ink has a crush on one of the boys in her class — Nao Tezuka, but she is much too shy to tell him how she feels about him.
But one day Ink's world turns upside-down when she meets [Arks Sheldart Elbyas], a mage who has been banned from the magic realm to the human world in the form of a duck. By accident, Ink and Arks meet. He gives Ink a magical cell phone that transforms her into [Pastel Ink]. Now Ink must help all those who are in need, and she uses her disguise to approach Nao-kun to help him study English. Soon Arks' arch enemy, [Karks], shows up in the form of a cat and enables Ink's friend, Sumi-chan, to transform as well.
However, these are not the only magical girls. One particularly mysterious one has some grudge against Arks and tries to do everything to stop him from doing good deeds.
Note: AniDB has the episodes ordered the way they were broadcast on TV and in a different section the DVD specials. This is because the broadcast of the original 6th episode was cancelled on all stations due to the content of the episode. Some stations aired a quick chopjob recap instead. The makers decided to turn the not-aired episode into a DVD special instead. The 13th episode also was never aired and was only released as a DVD special.