Milk Morizono (Japanese: 森園 みるく, Hepburn: Morizono Miruku; born December 25, 1957) is the pen name of Hiroko Mizoguchi (Japanese: 溝口 比呂子, Hepburn: Mizoguchi Hiroko), a Japanese manga artist and photographer. Noted for her works in the ladies' manga genre that feature ecchi themes and subject material, Morizono has been called the "Queen of Ladies' Manga" and noted by Rachel Matt Thorn as "the most popular and respected creator of erotic manga for women".
Source: “Milk Morizono”, English Wikipedia (CC BY-SA 4.0), excerpt