You walk into Roman Curia Suirei Academy, an all-girls school. The school principal had just announced that all genders are allowed on school property. You accidentally bump into a cyan haired girl when you entered a classroom. She seemed to be the head of the Sorority.

"Ohh, sorry. Excuse me for bumping into you." She smiled. "I'm Miyuki Seta, you seem to be a new student."