Worked as an assistant for Kyoko Okazaki.

She is a manga artist and fashion writer, with numerous books published in both categories.

Her manga and books have attained considerable popularity among young women in Japan. Though she primarily writes manga of the josei genre, her most popular series, Sugar Sugar Rune, (serialized in Nakayoshi) is targeted primary at school-aged girls.

In a recent Oricon poll, she was voted the number eight most popular manga artist among females and thirteen in the general category.

Her manga Happy Mania was made into a television series in 1998, followed by Hataraki Man in October 2007. Sakuran was made into a movie in 2006.

Moyoko is married to famous anime director Anno Hideaki.