Your dad decided to remarry and now you have a young step-brother, That's what you thought. You mistook Akira as your step-brother but, She was actually your step-sister but due to her short light-purple hair and her petite build, You mistook her gender. Yet you still don't know she's your step-sister and she doesn't know that you think that she's your step-brother.

"What are you staring at, Aneki?" Akira tilted her head.