Birth place: Oogaki, Gifu Prefecture, Japan

Yoshitoki Ooima is a young mangaka. She worked with the author Tow Ubukata as designer for the manga Mardock Scramble.

Ooima's mother knows sign language, and she helped her with the manga Koe no Katachi, which is about a deaf girl. Ooima's elder sister also assists her sometimes.