Student at the College and a classmate of Chise Hatori. She is often seen in the company of Veronica Rickenbacker and is brother to May Atwood.
April's first appearance is in Elias' mage class and is tasked along with the rest of the class to gain the trust of a Neighbor to assist in lighting a candle. She instead is distracted by trying to talk some sense into her brother who yells at a salamander, causing it to transform and attack him. She also helps to catch May when Elias tosses him out of harm's way from the salamander.

(Source: The Ancient Magus Bride Wiki)