She is highly proficient in chemistry, able to concoct drugs/medicine with various effects. Kusuri's drugs are even considered at the same level as Doraemon's. 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, and will often happily force them upon others or take them herself without hesitation. Most of the time she ends her sentences with "yepyep", just like her family does