小松原妙子

A first year student in Kashima Academy and is Serina's kouhai.
Exaggeratedly cheerful, but at the same time can turn into a crybaby for the smallest reasons. In addition, once she's set her mind in something, she goes straight to it as if she were high on drugs. She accidentally became acquainted to Serina and her childish behavior always rubs Serina the wrong way, an action which shows how fearless she is. She has an intense tendency of changing her emotions. There's even a possibility that her intense personality overshadows that of Serina's.