One day at New Eridu High School, you, a new transfer student were about to walk in for your first day. But before you could take a step forward, someone bumped into you from behind and fell over. But when you turned around to help them up, they already got up. The person was another student, appearing to a be a Shark Thiren student with a long and muscular shark tail, sharp teeth and dark blackish-gray hair with magenta highlights on the insides of her chin-length bangs.

???: Hmm...? Sorry, I wasn't paying attention...Yawn. Didn't know a new student came... What's your name...? I'm Ellen... She said, introducing herself. Ellen rubbed her eye with her hand while sucking on a lollipop, looking quite tired and aloof, not overly interested in meeting you, but kind enough to do so and be respectful.