Seiko Kimura, the Ultimate Pharmacist, is a student struggling with loneliness and her sense of self-worth. She knows how to manufacture almost any kind of drug and is eager to be useful to the people around her. Seiko was born with a mysterious illness that weakened her immune system to the point of necessitating her wearing a special respiratory mask all the time to protect her lungs. She wears braces for her crooked teeth, as well, and is enormously fat.