Her recent works include: Ayakashi Hisen, Hatsumei Princess, and Ichigo Jikan. Her works are serialized in Sho-Comi (Shojo Comic). Here is a link to her blog: http://kumakyo.blog59.fc2.com/
I became interested in Kumagai-sensei’s works when I bought Ichigo Jikan. I liked the artwork and the story was cute (cliche’ but cute). I’m planning to buy Hatsumei Princess and Ayakashi Hisen. Ayakashi Hisen is currently being serialized in Sho-Comi, so I’m reading the translated manga online as it is updated, but eventually will be the Japanese volumes.