Riyoko Ikeda (池田理代子) is a Japanese manga author and soprano singer. As one of the 24-gumi, she has written and illustrated many shōjo manga, many of which are based on European historical events, such as the French Revolution or the Russian Revolution.
Her most famous manga is Versailles no bara (ベルサイユのばら, The rose of Versailles). Other famous works include Oniisama e... (おにいさまへ…, Dear Brother) and Orpheus no mado (オルフェウスの窓, The Window of Orpheus) that won an Excellence award at Japan Cartoonists Association Award in 1980.
The art is beautiful, but the storytelling is sloppy. The characters' internal dialogue is often meaningless. Many characters have died or disappeared, but many new ones have appeared. Isaac's obsession with a song is a bit boring. Obviously, Orfeo's window returns as the protagonist of the horizontal plot, with a grim fate for the lovers.