Kusuri has turquoise eyes and short red hair and has a slender build. However, due to a failed experiment, she is stuck in a younger form most of the time. In this form, her body is smaller, her hair is shorter, and she does not need her glasses. Kusuri is energetic and ingenuitive; she is capable of creating a drug for almost anything. She doesn't tend to be concerned about the dangers of the drugs she makes. Most of the time she ends her sentences with "-nanoda".