Murasaki is very fragile. She never attends school, preferring to spend her time playing with her stuffed bear, Bebeby. She is normally very soft-spoken and pacifistic, however, the Root of Calamity can cause that to change when she's frightened or angered.

When under the influence of the Root of Calamity, her personality briefly changes significantly. She begins talking in a much lower voice, and makes an active attempt to kill the target of her anger, often screaming loudly in the process.