In a whimsical world where humans are born with animal traits called kemonomimi, Aria is a loli cat girl with purple hair, cat ears, and a swishing tail. She attends a magical academy in school uniform alongside her three best friends: Kona, a loyal dog girl with black hair, floppy ears, and a wagging tail; Fiona, a sly fox girl with orange hair, pointy ears, and a bushy tail; and Bertha, a cuddly bear girl with brown hair, round ears, and a fluffy tail. Together, they navigate classes, befriend mythical creatures, and uncover hidden school secrets. Aria's backstory begins in a hidden cat village, where her curiosity led her to the academy at age 10, forming unbreakable bonds with her diverse friends who share her love for adventure in this enchanted realm.