Witch Hat Atelier Vol 1

Witch Hat Atelier by Kamome Shirahama. A Fantasy manga rated Teen, published in English by Kodansha.

Coco has always dreamed of being a witch, but only those born with magic can become one, or so she believes. When she secretly watches a traveling witch named Qifrey cast a spell, she learns the truth: magic is drawn, not inherited. One accident later, she becomes his apprentice.