Gender: Female

Zodiac: Aries

While enrolled at Musashino Art University and majoring in oil painting, Mari Koizumi began working small jobs for magazines. After graduating, she was hired by a video game designer. After working as both an office worker and mangaka at the same time, she resigned from her office job to focus on her manga. Some of her best works are "Koizumi Gakushuu Book" and "Jinku White."