Character planner and illustrator, also active under the name Matsui Aya.
Graduated from Seisen University with a degree in Japanese Literature. After working as a planner for a stationery company and a game developer, she transitioned into freelance work. A mom and creator, she focuses on developing characters primarily for children.

Her major works include character design for U-tan from the NHK Educational TV program Inai Inai Baa!, character design and worldbuilding support for Tamagotchi since 2004, original character concepts for TV Tokyo’s iii Icecrin, and character design for mobile games such as Buru Buru Doubutsu and Fukoumori.