She is the older sister of Hirono Hiro and has a talent for painting. Her brother uses her name for his work as a mangaka. She likes to paint herself nude but lost her ability to draw because she felt alone for some time. She regains her ability to draw later and she is some kind of art teacher for Yuu Himuro who she loved back at highschool. She was engaged with Kuze for a short time and is a friend of Mizuki later. Her character is energetic but also very kind. She has short brown hair brown eyes and wears glasses in the present time of the second ef story.