Narumiya Azusa has always been known as the younger sister of Narumiya Mei. However, she is tired of living in his shadow, resulting in her shocking decision of going to Seido High School instead of following him to Inashiro. Azusa is determined to prove to Mei, a certain catcher, and more importantly to herself that she is more than a shadow. Miyuki Kazuya X Fem OC.

Because Sawamura Eijun just happened to be the cousin of Nakano Emiri, she had to transfer schools to Seidō of all places. She didn't even like that annoyance she was forced to call cousin. And she hated even more that their grandfather, her parents and her aunt and uncle, put the responsibility of taking care of stupid Ei-chan on her—excuse you, they had teachers for that!