九重ひなた

"But I'm your step-sister, right? In manga or anime, step-sisters are considered capturable targets!''

The heroine. A second-year highschool student. She is not only an honor student but someone who also performs well in sports; an unreachable beauty in school, but in all reality, she is actually just a brocon. Instead of hiding her feelings for her brother, she has no problem with displaying her affection for him and instead 'attacks' him daily with her fawning.