Mariko Iwadate

Mariko Iwadate (岩館真理子, Iwadate Mariko, born 8 February 1957, in Sapporo, Hokkaidō, Japan) is a Japanese shōjo manga artist who writes primarily for Margaret and Young You. She made her debut as a manga artist in 1973. She won the 1992 Kodansha Manga Award for shōjo for Uchi no Mama ga iu Koto ni wa, and her manga Ichigatsu ni wa Christmas ("Christmas in January") was adapted as an anime OVA in 1991.